Home / 1,818.38-2,722.28-1,122.95

Finding the Fourth Proportional to 1,818.38, 2,722.28 and 1,122.95

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Solution

The fourth proportional to 1,818.38, 2,722.28 and 1,122.95 is: 1,681.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,818.38 : 2,722.28 = 1,122.95 : x
  2. Step 2: Convert to fraction form
    1,818.38/2,722.28 = 1,122.95/x
  3. Step 3: Cross multiply
    1,818.38x = 2,722.28 × 1,122.95
  4. Step 4: Simplify right side
    1,818.38x = 3,056,985.52
  5. Step 5: Solve for x
    x = 3,056,985.52/1,818.38
  6. Step 6: Final answer
    x = 1,681.16

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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.