Home / 5,379.13-7,423.56-2,989.45

Finding the Fourth Proportional to 5,379.13, 7,423.56 and 2,989.45

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Solution

The fourth proportional to 5,379.13, 7,423.56 and 2,989.45 is: 4,125.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,379.13 : 7,423.56 = 2,989.45 : x
  2. Step 2: Convert to fraction form
    5,379.13/7,423.56 = 2,989.45/x
  3. Step 3: Cross multiply
    5,379.13x = 7,423.56 × 2,989.45
  4. Step 4: Simplify right side
    5,379.13x = 22,192,361.44
  5. Step 5: Solve for x
    x = 22,192,361.44/5,379.13
  6. Step 6: Final answer
    x = 4,125.64

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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.