Home / 5,487.03-7,572.56-3,129.39

Finding the Fourth Proportional to 5,487.03, 7,572.56 and 3,129.39

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Solution

The fourth proportional to 5,487.03, 7,572.56 and 3,129.39 is: 4,318.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,487.03 : 7,572.56 = 3,129.39 : x
  2. Step 2: Convert to fraction form
    5,487.03/7,572.56 = 3,129.39/x
  3. Step 3: Cross multiply
    5,487.03x = 7,572.56 × 3,129.39
  4. Step 4: Simplify right side
    5,487.03x = 23,697,477.89
  5. Step 5: Solve for x
    x = 23,697,477.89/5,487.03
  6. Step 6: Final answer
    x = 4,318.82

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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.