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Finding the Fourth Proportional to 5,329.71, 7,994.57 and 1,866.15

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Solution

The fourth proportional to 5,329.71, 7,994.57 and 1,866.15 is: 2,799.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,329.71 : 7,994.57 = 1,866.15 : x
  2. Step 2: Convert to fraction form
    5,329.71/7,994.57 = 1,866.15/x
  3. Step 3: Cross multiply
    5,329.71x = 7,994.57 × 1,866.15
  4. Step 4: Simplify right side
    5,329.71x = 14,919,057.47
  5. Step 5: Solve for x
    x = 14,919,057.47/5,329.71
  6. Step 6: Final answer
    x = 2,799.23

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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.