Home / 5,164.28-7,740.07-2,387.20

Finding the Fourth Proportional to 5,164.28, 7,740.07 and 2,387.20

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Solution

The fourth proportional to 5,164.28, 7,740.07 and 2,387.20 is: 3,577.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,164.28 : 7,740.07 = 2,387.20 : x
  2. Step 2: Convert to fraction form
    5,164.28/7,740.07 = 2,387.20/x
  3. Step 3: Cross multiply
    5,164.28x = 7,740.07 × 2,387.20
  4. Step 4: Simplify right side
    5,164.28x = 18,477,095.10
  5. Step 5: Solve for x
    x = 18,477,095.10/5,164.28
  6. Step 6: Final answer
    x = 3,577.86

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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.