Home / 5,379.18-7,421.65-3,255.49

Finding the Fourth Proportional to 5,379.18, 7,421.65 and 3,255.49

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Solution

The fourth proportional to 5,379.18, 7,421.65 and 3,255.49 is: 4,491.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,379.18 : 7,421.65 = 3,255.49 : x
  2. Step 2: Convert to fraction form
    5,379.18/7,421.65 = 3,255.49/x
  3. Step 3: Cross multiply
    5,379.18x = 7,421.65 × 3,255.49
  4. Step 4: Simplify right side
    5,379.18x = 24,161,107.36
  5. Step 5: Solve for x
    x = 24,161,107.36/5,379.18
  6. Step 6: Final answer
    x = 4,491.60

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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.