Home / 8,608.16-11,885.13-5,779.76

Finding the Fourth Proportional to 8,608.16, 11,885.13 and 5,779.76

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Solution

The fourth proportional to 8,608.16, 11,885.13 and 5,779.76 is: 7,980.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,608.16 : 11,885.13 = 5,779.76 : x
  2. Step 2: Convert to fraction form
    8,608.16/11,885.13 = 5,779.76/x
  3. Step 3: Cross multiply
    8,608.16x = 11,885.13 × 5,779.76
  4. Step 4: Simplify right side
    8,608.16x = 68,693,198.97
  5. Step 5: Solve for x
    x = 68,693,198.97/8,608.16
  6. Step 6: Final answer
    x = 7,980.01

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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.