Home / 2,130.68-3,191.88-1,306.52

Finding the Fourth Proportional to 2,130.68, 3,191.88 and 1,306.52

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Solution

The fourth proportional to 2,130.68, 3,191.88 and 1,306.52 is: 1,957.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,130.68 : 3,191.88 = 1,306.52 : x
  2. Step 2: Convert to fraction form
    2,130.68/3,191.88 = 1,306.52/x
  3. Step 3: Cross multiply
    2,130.68x = 3,191.88 × 1,306.52
  4. Step 4: Simplify right side
    2,130.68x = 4,170,255.06
  5. Step 5: Solve for x
    x = 4,170,255.06/2,130.68
  6. Step 6: Final answer
    x = 1,957.24

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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.