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Finding the Fourth Proportional to 5,191.54, 7,787.38 and 2,417.42

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Solution

The fourth proportional to 5,191.54, 7,787.38 and 2,417.42 is: 3,626.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,191.54 : 7,787.38 = 2,417.42 : x
  2. Step 2: Convert to fraction form
    5,191.54/7,787.38 = 2,417.42/x
  3. Step 3: Cross multiply
    5,191.54x = 7,787.38 × 2,417.42
  4. Step 4: Simplify right side
    5,191.54x = 18,825,368.16
  5. Step 5: Solve for x
    x = 18,825,368.16/5,191.54
  6. Step 6: Final answer
    x = 3,626.16

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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.