Home / 5,291.35-7,935.20-2,170.47

Finding the Fourth Proportional to 5,291.35, 7,935.20 and 2,170.47

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Solution

The fourth proportional to 5,291.35, 7,935.20 and 2,170.47 is: 3,254.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,291.35 : 7,935.20 = 2,170.47 : x
  2. Step 2: Convert to fraction form
    5,291.35/7,935.20 = 2,170.47/x
  3. Step 3: Cross multiply
    5,291.35x = 7,935.20 × 2,170.47
  4. Step 4: Simplify right side
    5,291.35x = 17,223,140.59
  5. Step 5: Solve for x
    x = 17,223,140.59/5,291.35
  6. Step 6: Final answer
    x = 3,254.96

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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.