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Finding the Fourth Proportional to 5,407.38, 8,111.13 and 1,944.63

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Solution

The fourth proportional to 5,407.38, 8,111.13 and 1,944.63 is: 2,916.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,407.38 : 8,111.13 = 1,944.63 : x
  2. Step 2: Convert to fraction form
    5,407.38/8,111.13 = 1,944.63/x
  3. Step 3: Cross multiply
    5,407.38x = 8,111.13 × 1,944.63
  4. Step 4: Simplify right side
    5,407.38x = 15,773,146.73
  5. Step 5: Solve for x
    x = 15,773,146.73/5,407.38
  6. Step 6: Final answer
    x = 2,916.97

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Double scale
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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.