Home / 8,917.61-12,306.98-4,939.09

Finding the Fourth Proportional to 8,917.61, 12,306.98 and 4,939.09

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Solution

The fourth proportional to 8,917.61, 12,306.98 and 4,939.09 is: 6,816.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,917.61 : 12,306.98 = 4,939.09 : x
  2. Step 2: Convert to fraction form
    8,917.61/12,306.98 = 4,939.09/x
  3. Step 3: Cross multiply
    8,917.61x = 12,306.98 × 4,939.09
  4. Step 4: Simplify right side
    8,917.61x = 60,785,263.43
  5. Step 5: Solve for x
    x = 60,785,263.43/8,917.61
  6. Step 6: Final answer
    x = 6,816.32

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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.