Home / 8,931.15-12,319.29-5,743.38

Finding the Fourth Proportional to 8,931.15, 12,319.29 and 5,743.38

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Solution

The fourth proportional to 8,931.15, 12,319.29 and 5,743.38 is: 7,922.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,931.15 : 12,319.29 = 5,743.38 : x
  2. Step 2: Convert to fraction form
    8,931.15/12,319.29 = 5,743.38/x
  3. Step 3: Cross multiply
    8,931.15x = 12,319.29 × 5,743.38
  4. Step 4: Simplify right side
    8,931.15x = 70,754,363.80
  5. Step 5: Solve for x
    x = 70,754,363.80/8,931.15
  6. Step 6: Final answer
    x = 7,922.20

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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.