Home / 1,962.90-2,708.10-1,177.20

Finding the Fourth Proportional to 1,962.90, 2,708.10 and 1,177.20

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Solution

The fourth proportional to 1,962.90, 2,708.10 and 1,177.20 is: 1,624.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,962.90 : 2,708.10 = 1,177.20 : x
  2. Step 2: Convert to fraction form
    1,962.90/2,708.10 = 1,177.20/x
  3. Step 3: Cross multiply
    1,962.90x = 2,708.10 × 1,177.20
  4. Step 4: Simplify right side
    1,962.90x = 3,187,975.32
  5. Step 5: Solve for x
    x = 3,187,975.32/1,962.90
  6. Step 6: Final answer
    x = 1,624.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.