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Finding the Fourth Proportional to 5,555.32, 7,672.08 and 4,805.68

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Solution

The fourth proportional to 5,555.32, 7,672.08 and 4,805.68 is: 6,636.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,555.32 : 7,672.08 = 4,805.68 : x
  2. Step 2: Convert to fraction form
    5,555.32/7,672.08 = 4,805.68/x
  3. Step 3: Cross multiply
    5,555.32x = 7,672.08 × 4,805.68
  4. Step 4: Simplify right side
    5,555.32x = 36,869,561.41
  5. Step 5: Solve for x
    x = 36,869,561.41/5,555.32
  6. Step 6: Final answer
    x = 6,636.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.