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Finding the Fourth Proportional to 5,655.56, 7,799.90 and 3,639.30

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Solution

The fourth proportional to 5,655.56, 7,799.90 and 3,639.30 is: 5,019.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,655.56 : 7,799.90 = 3,639.30 : x
  2. Step 2: Convert to fraction form
    5,655.56/7,799.90 = 3,639.30/x
  3. Step 3: Cross multiply
    5,655.56x = 7,799.90 × 3,639.30
  4. Step 4: Simplify right side
    5,655.56x = 28,386,176.07
  5. Step 5: Solve for x
    x = 28,386,176.07/5,655.56
  6. Step 6: Final answer
    x = 5,019.16

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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.