Home / 8,278.38-12,421.08-3,895.74

Finding the Fourth Proportional to 8,278.38, 12,421.08 and 3,895.74

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Solution

The fourth proportional to 8,278.38, 12,421.08 and 3,895.74 is: 5,845.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,278.38 : 12,421.08 = 3,895.74 : x
  2. Step 2: Convert to fraction form
    8,278.38/12,421.08 = 3,895.74/x
  3. Step 3: Cross multiply
    8,278.38x = 12,421.08 × 3,895.74
  4. Step 4: Simplify right side
    8,278.38x = 48,389,298.20
  5. Step 5: Solve for x
    x = 48,389,298.20/8,278.38
  6. Step 6: Final answer
    x = 5,845.26

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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.