Home / 1,207.20-1,664.82-944.76

Finding the Fourth Proportional to 1,207.20, 1,664.82 and 944.76

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Solution

The fourth proportional to 1,207.20, 1,664.82 and 944.76 is: 1,302.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,207.20 : 1,664.82 = 944.76 : x
  2. Step 2: Convert to fraction form
    1,207.20/1,664.82 = 944.76/x
  3. Step 3: Cross multiply
    1,207.20x = 1,664.82 × 944.76
  4. Step 4: Simplify right side
    1,207.20x = 1,572,855.34
  5. Step 5: Solve for x
    x = 1,572,855.34/1,207.20
  6. Step 6: Final answer
    x = 1,302.90

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Half scale
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Double scale
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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.