Home / 7,125.52-10,687.48-1,931.80

Finding the Fourth Proportional to 7,125.52, 10,687.48 and 1,931.80

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Solution

The fourth proportional to 7,125.52, 10,687.48 and 1,931.80 is: 2,897.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,125.52 : 10,687.48 = 1,931.80 : x
  2. Step 2: Convert to fraction form
    7,125.52/10,687.48 = 1,931.80/x
  3. Step 3: Cross multiply
    7,125.52x = 10,687.48 × 1,931.80
  4. Step 4: Simplify right side
    7,125.52x = 20,646,073.86
  5. Step 5: Solve for x
    x = 20,646,073.86/7,125.52
  6. Step 6: Final answer
    x = 2,897.48

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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.