Home / 2,031.18-3,045.45-1,379.90

Finding the Fourth Proportional to 2,031.18, 3,045.45 and 1,379.90

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Solution

The fourth proportional to 2,031.18, 3,045.45 and 1,379.90 is: 2,068.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,031.18 : 3,045.45 = 1,379.90 : x
  2. Step 2: Convert to fraction form
    2,031.18/3,045.45 = 1,379.90/x
  3. Step 3: Cross multiply
    2,031.18x = 3,045.45 × 1,379.90
  4. Step 4: Simplify right side
    2,031.18x = 4,202,416.46
  5. Step 5: Solve for x
    x = 4,202,416.46/2,031.18
  6. Step 6: Final answer
    x = 2,068.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.