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Finding the Fourth Proportional to 3,255.88, 4,884.15 and 915.89

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Solution

The fourth proportional to 3,255.88, 4,884.15 and 915.89 is: 1,373.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,255.88 : 4,884.15 = 915.89 : x
  2. Step 2: Convert to fraction form
    3,255.88/4,884.15 = 915.89/x
  3. Step 3: Cross multiply
    3,255.88x = 4,884.15 × 915.89
  4. Step 4: Simplify right side
    3,255.88x = 4,473,344.14
  5. Step 5: Solve for x
    x = 4,473,344.14/3,255.88
  6. Step 6: Final answer
    x = 1,373.93

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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.