Home / 8,971.86-13,449.06-4,290.66

Finding the Fourth Proportional to 8,971.86, 13,449.06 and 4,290.66

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Solution

The fourth proportional to 8,971.86, 13,449.06 and 4,290.66 is: 6,431.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,971.86 : 13,449.06 = 4,290.66 : x
  2. Step 2: Convert to fraction form
    8,971.86/13,449.06 = 4,290.66/x
  3. Step 3: Cross multiply
    8,971.86x = 13,449.06 × 4,290.66
  4. Step 4: Simplify right side
    8,971.86x = 57,705,343.78
  5. Step 5: Solve for x
    x = 57,705,343.78/8,971.86
  6. Step 6: Final answer
    x = 6,431.82

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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.