Home / 5,385.26-8,071.17-1,918.70

Finding the Fourth Proportional to 5,385.26, 8,071.17 and 1,918.70

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Solution

The fourth proportional to 5,385.26, 8,071.17 and 1,918.70 is: 2,875.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,385.26 : 8,071.17 = 1,918.70 : x
  2. Step 2: Convert to fraction form
    5,385.26/8,071.17 = 1,918.70/x
  3. Step 3: Cross multiply
    5,385.26x = 8,071.17 × 1,918.70
  4. Step 4: Simplify right side
    5,385.26x = 15,486,153.88
  5. Step 5: Solve for x
    x = 15,486,153.88/5,385.26
  6. Step 6: Final answer
    x = 2,875.66

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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.