Home / 5,353.80-7,387.74-3,115.62

Finding the Fourth Proportional to 5,353.80, 7,387.74 and 3,115.62

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Solution

The fourth proportional to 5,353.80, 7,387.74 and 3,115.62 is: 4,299.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,353.80 : 7,387.74 = 3,115.62 : x
  2. Step 2: Convert to fraction form
    5,353.80/7,387.74 = 3,115.62/x
  3. Step 3: Cross multiply
    5,353.80x = 7,387.74 × 3,115.62
  4. Step 4: Simplify right side
    5,353.80x = 23,017,390.50
  5. Step 5: Solve for x
    x = 23,017,390.50/5,353.80
  6. Step 6: Final answer
    x = 4,299.26

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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.