Home / 8,785.71-12,123.96-5,246.82

Finding the Fourth Proportional to 8,785.71, 12,123.96 and 5,246.82

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Solution

The fourth proportional to 8,785.71, 12,123.96 and 5,246.82 is: 7,240.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,785.71 : 12,123.96 = 5,246.82 : x
  2. Step 2: Convert to fraction form
    8,785.71/12,123.96 = 5,246.82/x
  3. Step 3: Cross multiply
    8,785.71x = 12,123.96 × 5,246.82
  4. Step 4: Simplify right side
    8,785.71x = 63,612,235.81
  5. Step 5: Solve for x
    x = 63,612,235.81/8,785.71
  6. Step 6: Final answer
    x = 7,240.42

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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.