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Finding the Fourth Proportional to 3,396.72, 5,095.04 and 931.53

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Solution

The fourth proportional to 3,396.72, 5,095.04 and 931.53 is: 1,397.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,396.72 : 5,095.04 = 931.53 : x
  2. Step 2: Convert to fraction form
    3,396.72/5,095.04 = 931.53/x
  3. Step 3: Cross multiply
    3,396.72x = 5,095.04 × 931.53
  4. Step 4: Simplify right side
    3,396.72x = 4,746,177.95
  5. Step 5: Solve for x
    x = 4,746,177.95/3,396.72
  6. Step 6: Final answer
    x = 1,397.28

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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.