Home / 2,422.80-3,638.52-1,693.80

Finding the Fourth Proportional to 2,422.80, 3,638.52 and 1,693.80

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Solution

The fourth proportional to 2,422.80, 3,638.52 and 1,693.80 is: 2,543.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,422.80 : 3,638.52 = 1,693.80 : x
  2. Step 2: Convert to fraction form
    2,422.80/3,638.52 = 1,693.80/x
  3. Step 3: Cross multiply
    2,422.80x = 3,638.52 × 1,693.80
  4. Step 4: Simplify right side
    2,422.80x = 6,162,925.18
  5. Step 5: Solve for x
    x = 6,162,925.18/2,422.80
  6. Step 6: Final answer
    x = 2,543.72

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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.