Home / 5,379.53-7,423.10-2,989.49

Finding the Fourth Proportional to 5,379.53, 7,423.10 and 2,989.49

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Solution

The fourth proportional to 5,379.53, 7,423.10 and 2,989.49 is: 4,125.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,379.53 : 7,423.10 = 2,989.49 : x
  2. Step 2: Convert to fraction form
    5,379.53/7,423.10 = 2,989.49/x
  3. Step 3: Cross multiply
    5,379.53x = 7,423.10 × 2,989.49
  4. Step 4: Simplify right side
    5,379.53x = 22,191,309.25
  5. Step 5: Solve for x
    x = 22,191,309.25/5,379.53
  6. Step 6: Final answer
    x = 4,125.14

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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.