Home / 1,479.30-2,040.90-1,031.36

Finding the Fourth Proportional to 1,479.30, 2,040.90 and 1,031.36

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Solution

The fourth proportional to 1,479.30, 2,040.90 and 1,031.36 is: 1,422.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,479.30 : 2,040.90 = 1,031.36 : x
  2. Step 2: Convert to fraction form
    1,479.30/2,040.90 = 1,031.36/x
  3. Step 3: Cross multiply
    1,479.30x = 2,040.90 × 1,031.36
  4. Step 4: Simplify right side
    1,479.30x = 2,104,902.62
  5. Step 5: Solve for x
    x = 2,104,902.62/1,479.30
  6. Step 6: Final answer
    x = 1,422.90

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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.