Home / 1,729.04-2,591.76-1,209.20

Finding the Fourth Proportional to 1,729.04, 2,591.76 and 1,209.20

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Solution

The fourth proportional to 1,729.04, 2,591.76 and 1,209.20 is: 1,812.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,729.04 : 2,591.76 = 1,209.20 : x
  2. Step 2: Convert to fraction form
    1,729.04/2,591.76 = 1,209.20/x
  3. Step 3: Cross multiply
    1,729.04x = 2,591.76 × 1,209.20
  4. Step 4: Simplify right side
    1,729.04x = 3,133,956.19
  5. Step 5: Solve for x
    x = 3,133,956.19/1,729.04
  6. Step 6: Final answer
    x = 1,812.54

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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.