Home / 2,651.04-3,979.80-1,681.20

Finding the Fourth Proportional to 2,651.04, 3,979.80 and 1,681.20

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Solution

The fourth proportional to 2,651.04, 3,979.80 and 1,681.20 is: 2,523.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,651.04 : 3,979.80 = 1,681.20 : x
  2. Step 2: Convert to fraction form
    2,651.04/3,979.80 = 1,681.20/x
  3. Step 3: Cross multiply
    2,651.04x = 3,979.80 × 1,681.20
  4. Step 4: Simplify right side
    2,651.04x = 6,690,839.76
  5. Step 5: Solve for x
    x = 6,690,839.76/2,651.04
  6. Step 6: Final answer
    x = 2,523.85

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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.