Home / 5,390.06-8,079.91-1,689.71

Finding the Fourth Proportional to 5,390.06, 8,079.91 and 1,689.71

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Solution

The fourth proportional to 5,390.06, 8,079.91 and 1,689.71 is: 2,532.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,390.06 : 8,079.91 = 1,689.71 : x
  2. Step 2: Convert to fraction form
    5,390.06/8,079.91 = 1,689.71/x
  3. Step 3: Cross multiply
    5,390.06x = 8,079.91 × 1,689.71
  4. Step 4: Simplify right side
    5,390.06x = 13,652,720.70
  5. Step 5: Solve for x
    x = 13,652,720.70/5,390.06
  6. Step 6: Final answer
    x = 2,532.94

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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.