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Finding the Fourth Proportional to 3,931.03, 5,422.02 and 3,256.70

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Solution

The fourth proportional to 3,931.03, 5,422.02 and 3,256.70 is: 4,491.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,931.03 : 5,422.02 = 3,256.70 : x
  2. Step 2: Convert to fraction form
    3,931.03/5,422.02 = 3,256.70/x
  3. Step 3: Cross multiply
    3,931.03x = 5,422.02 × 3,256.70
  4. Step 4: Simplify right side
    3,931.03x = 17,657,892.53
  5. Step 5: Solve for x
    x = 17,657,892.53/3,931.03
  6. Step 6: Final answer
    x = 4,491.93

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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.