Home / 1,527.55-2,108.19-1,278.43

Finding the Fourth Proportional to 1,527.55, 2,108.19 and 1,278.43

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Solution

The fourth proportional to 1,527.55, 2,108.19 and 1,278.43 is: 1,764.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,527.55 : 2,108.19 = 1,278.43 : x
  2. Step 2: Convert to fraction form
    1,527.55/2,108.19 = 1,278.43/x
  3. Step 3: Cross multiply
    1,527.55x = 2,108.19 × 1,278.43
  4. Step 4: Simplify right side
    1,527.55x = 2,695,173.34
  5. Step 5: Solve for x
    x = 2,695,173.34/1,527.55
  6. Step 6: Final answer
    x = 1,764.38

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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.