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Finding the Fourth Proportional to 8,880.25, 12,255.96 and 5,154.25

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Solution

The fourth proportional to 8,880.25, 12,255.96 and 5,154.25 is: 7,113.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,880.25 : 12,255.96 = 5,154.25 : x
  2. Step 2: Convert to fraction form
    8,880.25/12,255.96 = 5,154.25/x
  3. Step 3: Cross multiply
    8,880.25x = 12,255.96 × 5,154.25
  4. Step 4: Simplify right side
    8,880.25x = 63,170,281.83
  5. Step 5: Solve for x
    x = 63,170,281.83/8,880.25
  6. Step 6: Final answer
    x = 7,113.57

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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.