Home / 6,379.29-8,807.49-4,111.65

Finding the Fourth Proportional to 6,379.29, 8,807.49 and 4,111.65

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Solution

The fourth proportional to 6,379.29, 8,807.49 and 4,111.65 is: 5,676.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,379.29 : 8,807.49 = 4,111.65 : x
  2. Step 2: Convert to fraction form
    6,379.29/8,807.49 = 4,111.65/x
  3. Step 3: Cross multiply
    6,379.29x = 8,807.49 × 4,111.65
  4. Step 4: Simplify right side
    6,379.29x = 36,213,316.26
  5. Step 5: Solve for x
    x = 36,213,316.26/6,379.29
  6. Step 6: Final answer
    x = 5,676.70

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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.