Home / 8,779.20-12,115.20-5,244.48

Finding the Fourth Proportional to 8,779.20, 12,115.20 and 5,244.48

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Solution

The fourth proportional to 8,779.20, 12,115.20 and 5,244.48 is: 7,237.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,779.20 : 12,115.20 = 5,244.48 : x
  2. Step 2: Convert to fraction form
    8,779.20/12,115.20 = 5,244.48/x
  3. Step 3: Cross multiply
    8,779.20x = 12,115.20 × 5,244.48
  4. Step 4: Simplify right side
    8,779.20x = 63,537,924.10
  5. Step 5: Solve for x
    x = 63,537,924.10/8,779.20
  6. Step 6: Final answer
    x = 7,237.33

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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.