Home / 5,378.87-7,423.20-2,989.19

Finding the Fourth Proportional to 5,378.87, 7,423.20 and 2,989.19

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Solution

The fourth proportional to 5,378.87, 7,423.20 and 2,989.19 is: 4,125.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,378.87 : 7,423.20 = 2,989.19 : x
  2. Step 2: Convert to fraction form
    5,378.87/7,423.20 = 2,989.19/x
  3. Step 3: Cross multiply
    5,378.87x = 7,423.20 × 2,989.19
  4. Step 4: Simplify right side
    5,378.87x = 22,189,318.09
  5. Step 5: Solve for x
    x = 22,189,318.09/5,378.87
  6. Step 6: Final answer
    x = 4,125.28

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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.