Home / 5,352.84-7,387.62-3,115.40

Finding the Fourth Proportional to 5,352.84, 7,387.62 and 3,115.40

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Solution

The fourth proportional to 5,352.84, 7,387.62 and 3,115.40 is: 4,299.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,352.84 : 7,387.62 = 3,115.40 : x
  2. Step 2: Convert to fraction form
    5,352.84/7,387.62 = 3,115.40/x
  3. Step 3: Cross multiply
    5,352.84x = 7,387.62 × 3,115.40
  4. Step 4: Simplify right side
    5,352.84x = 23,015,391.35
  5. Step 5: Solve for x
    x = 23,015,391.35/5,352.84
  6. Step 6: Final answer
    x = 4,299.66

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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.