Home / 3,518.52-5,278.50-1,178.76

Finding the Fourth Proportional to 3,518.52, 5,278.50 and 1,178.76

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Solution

The fourth proportional to 3,518.52, 5,278.50 and 1,178.76 is: 1,768.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,518.52 : 5,278.50 = 1,178.76 : x
  2. Step 2: Convert to fraction form
    3,518.52/5,278.50 = 1,178.76/x
  3. Step 3: Cross multiply
    3,518.52x = 5,278.50 × 1,178.76
  4. Step 4: Simplify right side
    3,518.52x = 6,222,084.66
  5. Step 5: Solve for x
    x = 6,222,084.66/3,518.52
  6. Step 6: Final answer
    x = 1,768.38

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Half scale
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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.