Home / 5,487.48-7,572.56-3,129.51

Finding the Fourth Proportional to 5,487.48, 7,572.56 and 3,129.51

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Solution

The fourth proportional to 5,487.48, 7,572.56 and 3,129.51 is: 4,318.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,487.48 : 7,572.56 = 3,129.51 : x
  2. Step 2: Convert to fraction form
    5,487.48/7,572.56 = 3,129.51/x
  3. Step 3: Cross multiply
    5,487.48x = 7,572.56 × 3,129.51
  4. Step 4: Simplify right side
    5,487.48x = 23,698,386.60
  5. Step 5: Solve for x
    x = 23,698,386.60/5,487.48
  6. Step 6: Final answer
    x = 4,318.63

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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.