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Finding the Fourth Proportional to 7,906.48, 10,902.04 and 5,390.06

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Solution

The fourth proportional to 7,906.48, 10,902.04 and 5,390.06 is: 7,432.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,906.48 : 10,902.04 = 5,390.06 : x
  2. Step 2: Convert to fraction form
    7,906.48/10,902.04 = 5,390.06/x
  3. Step 3: Cross multiply
    7,906.48x = 10,902.04 × 5,390.06
  4. Step 4: Simplify right side
    7,906.48x = 58,762,581.74
  5. Step 5: Solve for x
    x = 58,762,581.74/7,906.48
  6. Step 6: Final answer
    x = 7,432.21

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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.