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Finding the Fourth Proportional to 8,915.55, 12,302.94 and 5,233.13

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Solution

The fourth proportional to 8,915.55, 12,302.94 and 5,233.13 is: 7,221.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,915.55 : 12,302.94 = 5,233.13 : x
  2. Step 2: Convert to fraction form
    8,915.55/12,302.94 = 5,233.13/x
  3. Step 3: Cross multiply
    8,915.55x = 12,302.94 × 5,233.13
  4. Step 4: Simplify right side
    8,915.55x = 64,382,822.89
  5. Step 5: Solve for x
    x = 64,382,822.89/8,915.55
  6. Step 6: Final answer
    x = 7,221.41

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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.