Home / 1,620.25-2,237.19-1,265.55

Finding the Fourth Proportional to 1,620.25, 2,237.19 and 1,265.55

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Solution

The fourth proportional to 1,620.25, 2,237.19 and 1,265.55 is: 1,747.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,620.25 : 2,237.19 = 1,265.55 : x
  2. Step 2: Convert to fraction form
    1,620.25/2,237.19 = 1,265.55/x
  3. Step 3: Cross multiply
    1,620.25x = 2,237.19 × 1,265.55
  4. Step 4: Simplify right side
    1,620.25x = 2,831,275.80
  5. Step 5: Solve for x
    x = 2,831,275.80/1,620.25
  6. Step 6: Final answer
    x = 1,747.44

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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.