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Finding the Fourth Proportional to 5,751.92, 7,934.40 and 3,393.84

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Solution

The fourth proportional to 5,751.92, 7,934.40 and 3,393.84 is: 4,681.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,751.92 : 7,934.40 = 3,393.84 : x
  2. Step 2: Convert to fraction form
    5,751.92/7,934.40 = 3,393.84/x
  3. Step 3: Cross multiply
    5,751.92x = 7,934.40 × 3,393.84
  4. Step 4: Simplify right side
    5,751.92x = 26,928,084.10
  5. Step 5: Solve for x
    x = 26,928,084.10/5,751.92
  6. Step 6: Final answer
    x = 4,681.58

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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.