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Finding the Fourth Proportional to 3,903.52, 5,386 and 2,644.76

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Solution

The fourth proportional to 3,903.52, 5,386 and 2,644.76 is: 3,649.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,903.52 : 5,386 = 2,644.76 : x
  2. Step 2: Convert to fraction form
    3,903.52/5,386 = 2,644.76/x
  3. Step 3: Cross multiply
    3,903.52x = 5,386 × 2,644.76
  4. Step 4: Simplify right side
    3,903.52x = 14,244,677.36
  5. Step 5: Solve for x
    x = 14,244,677.36/3,903.52
  6. Step 6: Final answer
    x = 3,649.19

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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.