Home / 1,772.84-2,447.28-1,109.55

Finding the Fourth Proportional to 1,772.84, 2,447.28 and 1,109.55

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Solution

The fourth proportional to 1,772.84, 2,447.28 and 1,109.55 is: 1,531.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,772.84 : 2,447.28 = 1,109.55 : x
  2. Step 2: Convert to fraction form
    1,772.84/2,447.28 = 1,109.55/x
  3. Step 3: Cross multiply
    1,772.84x = 2,447.28 × 1,109.55
  4. Step 4: Simplify right side
    1,772.84x = 2,715,379.52
  5. Step 5: Solve for x
    x = 2,715,379.52/1,772.84
  6. Step 6: Final answer
    x = 1,531.66

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1.5x scale

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.