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Finding the Fourth Proportional to 8,862.67, 13,281.48 and 4,915.67

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Solution

The fourth proportional to 8,862.67, 13,281.48 and 4,915.67 is: 7,366.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,862.67 : 13,281.48 = 4,915.67 : x
  2. Step 2: Convert to fraction form
    8,862.67/13,281.48 = 4,915.67/x
  3. Step 3: Cross multiply
    8,862.67x = 13,281.48 × 4,915.67
  4. Step 4: Simplify right side
    8,862.67x = 65,287,337.76
  5. Step 5: Solve for x
    x = 65,287,337.76/8,862.67
  6. Step 6: Final answer
    x = 7,366.55

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1.5x scale

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.