Home / 1,087.08-1,497.45-1,031.49

Finding the Fourth Proportional to 1,087.08, 1,497.45 and 1,031.49

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Solution

The fourth proportional to 1,087.08, 1,497.45 and 1,031.49 is: 1,420.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,087.08 : 1,497.45 = 1,031.49 : x
  2. Step 2: Convert to fraction form
    1,087.08/1,497.45 = 1,031.49/x
  3. Step 3: Cross multiply
    1,087.08x = 1,497.45 × 1,031.49
  4. Step 4: Simplify right side
    1,087.08x = 1,544,604.70
  5. Step 5: Solve for x
    x = 1,544,604.70/1,087.08
  6. Step 6: Final answer
    x = 1,420.87

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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.