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Finding the Fourth Proportional to 5,757.84, 7,947.84 and 3,521.28

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Solution

The fourth proportional to 5,757.84, 7,947.84 and 3,521.28 is: 4,860.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,757.84 : 7,947.84 = 3,521.28 : x
  2. Step 2: Convert to fraction form
    5,757.84/7,947.84 = 3,521.28/x
  3. Step 3: Cross multiply
    5,757.84x = 7,947.84 × 3,521.28
  4. Step 4: Simplify right side
    5,757.84x = 27,986,570.04
  5. Step 5: Solve for x
    x = 27,986,570.04/5,757.84
  6. Step 6: Final answer
    x = 4,860.60

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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.