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Finding the Fourth Proportional to 3,915.60, 5,873.40 and 994.14

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Solution

The fourth proportional to 3,915.60, 5,873.40 and 994.14 is: 1,491.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,915.60 : 5,873.40 = 994.14 : x
  2. Step 2: Convert to fraction form
    3,915.60/5,873.40 = 994.14/x
  3. Step 3: Cross multiply
    3,915.60x = 5,873.40 × 994.14
  4. Step 4: Simplify right side
    3,915.60x = 5,838,981.88
  5. Step 5: Solve for x
    x = 5,838,981.88/3,915.60
  6. Step 6: Final answer
    x = 1,491.21

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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.