Home / 8,278.05-12,417.08-4,118.85

Finding the Fourth Proportional to 8,278.05, 12,417.08 and 4,118.85

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Solution

The fourth proportional to 8,278.05, 12,417.08 and 4,118.85 is: 6,178.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,278.05 : 12,417.08 = 4,118.85 : x
  2. Step 2: Convert to fraction form
    8,278.05/12,417.08 = 4,118.85/x
  3. Step 3: Cross multiply
    8,278.05x = 12,417.08 × 4,118.85
  4. Step 4: Simplify right side
    8,278.05x = 51,144,069.36
  5. Step 5: Solve for x
    x = 51,144,069.36/8,278.05
  6. Step 6: Final answer
    x = 6,178.28

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Double scale
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Similar ratio
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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.