Home / 4,921.32-7,381.92-2,947.50

Finding the Fourth Proportional to 4,921.32, 7,381.92 and 2,947.50

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Solution

The fourth proportional to 4,921.32, 7,381.92 and 2,947.50 is: 4,421.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,921.32 : 7,381.92 = 2,947.50 : x
  2. Step 2: Convert to fraction form
    4,921.32/7,381.92 = 2,947.50/x
  3. Step 3: Cross multiply
    4,921.32x = 7,381.92 × 2,947.50
  4. Step 4: Simplify right side
    4,921.32x = 21,758,209.20
  5. Step 5: Solve for x
    x = 21,758,209.20/4,921.32
  6. Step 6: Final answer
    x = 4,421.21

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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.