Home / 8,989.26-12,400.11-5,671.50

Finding the Fourth Proportional to 8,989.26, 12,400.11 and 5,671.50

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Solution

The fourth proportional to 8,989.26, 12,400.11 and 5,671.50 is: 7,823.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,989.26 : 12,400.11 = 5,671.50 : x
  2. Step 2: Convert to fraction form
    8,989.26/12,400.11 = 5,671.50/x
  3. Step 3: Cross multiply
    8,989.26x = 12,400.11 × 5,671.50
  4. Step 4: Simplify right side
    8,989.26x = 70,327,223.87
  5. Step 5: Solve for x
    x = 70,327,223.87/8,989.26
  6. Step 6: Final answer
    x = 7,823.47

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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.