Home / 5,688.47-7,850.55-3,171.40

Finding the Fourth Proportional to 5,688.47, 7,850.55 and 3,171.40

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Solution

The fourth proportional to 5,688.47, 7,850.55 and 3,171.40 is: 4,376.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,688.47 : 7,850.55 = 3,171.40 : x
  2. Step 2: Convert to fraction form
    5,688.47/7,850.55 = 3,171.40/x
  3. Step 3: Cross multiply
    5,688.47x = 7,850.55 × 3,171.40
  4. Step 4: Simplify right side
    5,688.47x = 24,897,179.16
  5. Step 5: Solve for x
    x = 24,897,179.16/5,688.47
  6. Step 6: Final answer
    x = 4,376.78

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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.