Home / 8,917.60-12,306.08-4,938.56

Finding the Fourth Proportional to 8,917.60, 12,306.08 and 4,938.56

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Solution

The fourth proportional to 8,917.60, 12,306.08 and 4,938.56 is: 6,815.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,917.60 : 12,306.08 = 4,938.56 : x
  2. Step 2: Convert to fraction form
    8,917.60/12,306.08 = 4,938.56/x
  3. Step 3: Cross multiply
    8,917.60x = 12,306.08 × 4,938.56
  4. Step 4: Simplify right side
    8,917.60x = 60,774,314.44
  5. Step 5: Solve for x
    x = 60,774,314.44/8,917.60
  6. Step 6: Final answer
    x = 6,815.10

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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.