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Finding the Fourth Proportional to 3,937.66, 5,877.51 and 3,608.90

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Solution

The fourth proportional to 3,937.66, 5,877.51 and 3,608.90 is: 5,386.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,937.66 : 5,877.51 = 3,608.90 : x
  2. Step 2: Convert to fraction form
    3,937.66/5,877.51 = 3,608.90/x
  3. Step 3: Cross multiply
    3,937.66x = 5,877.51 × 3,608.90
  4. Step 4: Simplify right side
    3,937.66x = 21,211,378.32
  5. Step 5: Solve for x
    x = 21,211,378.32/3,937.66
  6. Step 6: Final answer
    x = 5,386.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.