Home / 1,339.10-2,005.16-1,077.67

Finding the Fourth Proportional to 1,339.10, 2,005.16 and 1,077.67

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Solution

The fourth proportional to 1,339.10, 2,005.16 and 1,077.67 is: 1,613.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,339.10 : 2,005.16 = 1,077.67 : x
  2. Step 2: Convert to fraction form
    1,339.10/2,005.16 = 1,077.67/x
  3. Step 3: Cross multiply
    1,339.10x = 2,005.16 × 1,077.67
  4. Step 4: Simplify right side
    1,339.10x = 2,160,897.90
  5. Step 5: Solve for x
    x = 2,160,897.90/1,339.10
  6. Step 6: Final answer
    x = 1,613.70

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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.