Home / 8,779.56-12,115.68-5,247.48

Finding the Fourth Proportional to 8,779.56, 12,115.68 and 5,247.48

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Solution

The fourth proportional to 8,779.56, 12,115.68 and 5,247.48 is: 7,241.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,779.56 : 12,115.68 = 5,247.48 : x
  2. Step 2: Convert to fraction form
    8,779.56/12,115.68 = 5,247.48/x
  3. Step 3: Cross multiply
    8,779.56x = 12,115.68 × 5,247.48
  4. Step 4: Simplify right side
    8,779.56x = 63,576,788.49
  5. Step 5: Solve for x
    x = 63,576,788.49/8,779.56
  6. Step 6: Final answer
    x = 7,241.45

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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.