Home / 5,379.12-7,423.20-3,021.30

Finding the Fourth Proportional to 5,379.12, 7,423.20 and 3,021.30

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Solution

The fourth proportional to 5,379.12, 7,423.20 and 3,021.30 is: 4,169.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,379.12 : 7,423.20 = 3,021.30 : x
  2. Step 2: Convert to fraction form
    5,379.12/7,423.20 = 3,021.30/x
  3. Step 3: Cross multiply
    5,379.12x = 7,423.20 × 3,021.30
  4. Step 4: Simplify right side
    5,379.12x = 22,427,714.16
  5. Step 5: Solve for x
    x = 22,427,714.16/5,379.12
  6. Step 6: Final answer
    x = 4,169.40

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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.