Home / 8,909.96-12,291.86-5,371.16

Finding the Fourth Proportional to 8,909.96, 12,291.86 and 5,371.16

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Solution

The fourth proportional to 8,909.96, 12,291.86 and 5,371.16 is: 7,409.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,909.96 : 12,291.86 = 5,371.16 : x
  2. Step 2: Convert to fraction form
    8,909.96/12,291.86 = 5,371.16/x
  3. Step 3: Cross multiply
    8,909.96x = 12,291.86 × 5,371.16
  4. Step 4: Simplify right side
    8,909.96x = 66,021,546.76
  5. Step 5: Solve for x
    x = 66,021,546.76/8,909.96
  6. Step 6: Final answer
    x = 7,409.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.