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Finding the Fourth Proportional to 3,910.17, 5,865.27 and 948.61

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Solution

The fourth proportional to 3,910.17, 5,865.27 and 948.61 is: 1,422.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,910.17 : 5,865.27 = 948.61 : x
  2. Step 2: Convert to fraction form
    3,910.17/5,865.27 = 948.61/x
  3. Step 3: Cross multiply
    3,910.17x = 5,865.27 × 948.61
  4. Step 4: Simplify right side
    3,910.17x = 5,563,853.77
  5. Step 5: Solve for x
    x = 5,563,853.77/3,910.17
  6. Step 6: Final answer
    x = 1,422.92

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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.