Home / 9,400.48-12,972.64-5,151.80

Finding the Fourth Proportional to 9,400.48, 12,972.64 and 5,151.80

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Solution

The fourth proportional to 9,400.48, 12,972.64 and 5,151.80 is: 7,109.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,400.48 : 12,972.64 = 5,151.80 : x
  2. Step 2: Convert to fraction form
    9,400.48/12,972.64 = 5,151.80/x
  3. Step 3: Cross multiply
    9,400.48x = 12,972.64 × 5,151.80
  4. Step 4: Simplify right side
    9,400.48x = 66,832,446.75
  5. Step 5: Solve for x
    x = 66,832,446.75/9,400.48
  6. Step 6: Final answer
    x = 7,109.47

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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.