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Finding the Fourth Proportional to 3,607.52, 4,978.48 and 2,721.76

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Solution

The fourth proportional to 3,607.52, 4,978.48 and 2,721.76 is: 3,756.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,607.52 : 4,978.48 = 2,721.76 : x
  2. Step 2: Convert to fraction form
    3,607.52/4,978.48 = 2,721.76/x
  3. Step 3: Cross multiply
    3,607.52x = 4,978.48 × 2,721.76
  4. Step 4: Simplify right side
    3,607.52x = 13,550,227.72
  5. Step 5: Solve for x
    x = 13,550,227.72/3,607.52
  6. Step 6: Final answer
    x = 3,756.11

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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.