Home / 1,125.12-1,548.36-1,031.88

Finding the Fourth Proportional to 1,125.12, 1,548.36 and 1,031.88

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Solution

The fourth proportional to 1,125.12, 1,548.36 and 1,031.88 is: 1,420.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,125.12 : 1,548.36 = 1,031.88 : x
  2. Step 2: Convert to fraction form
    1,125.12/1,548.36 = 1,031.88/x
  3. Step 3: Cross multiply
    1,125.12x = 1,548.36 × 1,031.88
  4. Step 4: Simplify right side
    1,125.12x = 1,597,721.72
  5. Step 5: Solve for x
    x = 1,597,721.72/1,125.12
  6. Step 6: Final answer
    x = 1,420.05

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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.