Home / 8,917.47-12,306.06-5,140.71

Finding the Fourth Proportional to 8,917.47, 12,306.06 and 5,140.71

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Solution

The fourth proportional to 8,917.47, 12,306.06 and 5,140.71 is: 7,094.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,917.47 : 12,306.06 = 5,140.71 : x
  2. Step 2: Convert to fraction form
    8,917.47/12,306.06 = 5,140.71/x
  3. Step 3: Cross multiply
    8,917.47x = 12,306.06 × 5,140.71
  4. Step 4: Simplify right side
    8,917.47x = 63,261,885.70
  5. Step 5: Solve for x
    x = 63,261,885.70/8,917.47
  6. Step 6: Final answer
    x = 7,094.15

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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.