Home / 4,772.79-7,159.14-2,139.75

Finding the Fourth Proportional to 4,772.79, 7,159.14 and 2,139.75

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Solution

The fourth proportional to 4,772.79, 7,159.14 and 2,139.75 is: 3,209.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,772.79 : 7,159.14 = 2,139.75 : x
  2. Step 2: Convert to fraction form
    4,772.79/7,159.14 = 2,139.75/x
  3. Step 3: Cross multiply
    4,772.79x = 7,159.14 × 2,139.75
  4. Step 4: Simplify right side
    4,772.79x = 15,318,769.82
  5. Step 5: Solve for x
    x = 15,318,769.82/4,772.79
  6. Step 6: Final answer
    x = 3,209.60

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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.