Home / 8,971.65-13,456.25-3,426.39

Finding the Fourth Proportional to 8,971.65, 13,456.25 and 3,426.39

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Solution

The fourth proportional to 8,971.65, 13,456.25 and 3,426.39 is: 5,139.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,971.65 : 13,456.25 = 3,426.39 : x
  2. Step 2: Convert to fraction form
    8,971.65/13,456.25 = 3,426.39/x
  3. Step 3: Cross multiply
    8,971.65x = 13,456.25 × 3,426.39
  4. Step 4: Simplify right side
    8,971.65x = 46,106,343.31
  5. Step 5: Solve for x
    x = 46,106,343.31/8,971.65
  6. Step 6: Final answer
    x = 5,139.12

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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.