Home / 8,187.38-12,284.70-4,290.86

Finding the Fourth Proportional to 8,187.38, 12,284.70 and 4,290.86

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Solution

The fourth proportional to 8,187.38, 12,284.70 and 4,290.86 is: 6,438.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,187.38 : 12,284.70 = 4,290.86 : x
  2. Step 2: Convert to fraction form
    8,187.38/12,284.70 = 4,290.86/x
  3. Step 3: Cross multiply
    8,187.38x = 12,284.70 × 4,290.86
  4. Step 4: Simplify right side
    8,187.38x = 52,711,927.84
  5. Step 5: Solve for x
    x = 52,711,927.84/8,187.38
  6. Step 6: Final answer
    x = 6,438.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.