Home / 7,147.04-10,728.45-5,397.44

Finding the Fourth Proportional to 7,147.04, 10,728.45 and 5,397.44

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Solution

The fourth proportional to 7,147.04, 10,728.45 and 5,397.44 is: 8,102.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,147.04 : 10,728.45 = 5,397.44 : x
  2. Step 2: Convert to fraction form
    7,147.04/10,728.45 = 5,397.44/x
  3. Step 3: Cross multiply
    7,147.04x = 10,728.45 × 5,397.44
  4. Step 4: Simplify right side
    7,147.04x = 57,906,111.53
  5. Step 5: Solve for x
    x = 57,906,111.53/7,147.04
  6. Step 6: Final answer
    x = 8,102.12

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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.