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Finding the Fourth Proportional to 7,880.60, 11,820.90 and 4,593.68

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Solution

The fourth proportional to 7,880.60, 11,820.90 and 4,593.68 is: 6,890.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,880.60 : 11,820.90 = 4,593.68 : x
  2. Step 2: Convert to fraction form
    7,880.60/11,820.90 = 4,593.68/x
  3. Step 3: Cross multiply
    7,880.60x = 11,820.90 × 4,593.68
  4. Step 4: Simplify right side
    7,880.60x = 54,301,431.91
  5. Step 5: Solve for x
    x = 54,301,431.91/7,880.60
  6. Step 6: Final answer
    x = 6,890.52

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.