Home / 4,785.67-7,178.50-1,275.68

Finding the Fourth Proportional to 4,785.67, 7,178.50 and 1,275.68

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Solution

The fourth proportional to 4,785.67, 7,178.50 and 1,275.68 is: 1,913.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,785.67 : 7,178.50 = 1,275.68 : x
  2. Step 2: Convert to fraction form
    4,785.67/7,178.50 = 1,275.68/x
  3. Step 3: Cross multiply
    4,785.67x = 7,178.50 × 1,275.68
  4. Step 4: Simplify right side
    4,785.67x = 9,157,468.88
  5. Step 5: Solve for x
    x = 9,157,468.88/4,785.67
  6. Step 6: Final answer
    x = 1,913.52

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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.