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Finding the Fourth Proportional to 1,655.80, 2,282.28 and 1,375.48

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Solution

The fourth proportional to 1,655.80, 2,282.28 and 1,375.48 is: 1,895.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,655.80 : 2,282.28 = 1,375.48 : x
  2. Step 2: Convert to fraction form
    1,655.80/2,282.28 = 1,375.48/x
  3. Step 3: Cross multiply
    1,655.80x = 2,282.28 × 1,375.48
  4. Step 4: Simplify right side
    1,655.80x = 3,139,230.49
  5. Step 5: Solve for x
    x = 3,139,230.49/1,655.80
  6. Step 6: Final answer
    x = 1,895.90

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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.