Home / 8,917.98-12,306.56-4,939.06

Finding the Fourth Proportional to 8,917.98, 12,306.56 and 4,939.06

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Solution

The fourth proportional to 8,917.98, 12,306.56 and 4,939.06 is: 6,815.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,917.98 : 12,306.56 = 4,939.06 : x
  2. Step 2: Convert to fraction form
    8,917.98/12,306.56 = 4,939.06/x
  3. Step 3: Cross multiply
    8,917.98x = 12,306.56 × 4,939.06
  4. Step 4: Simplify right side
    8,917.98x = 60,782,838.23
  5. Step 5: Solve for x
    x = 60,782,838.23/8,917.98
  6. Step 6: Final answer
    x = 6,815.76

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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.