Home / 8,519.40-12,779.84-2,972.66

Finding the Fourth Proportional to 8,519.40, 12,779.84 and 2,972.66

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Solution

The fourth proportional to 8,519.40, 12,779.84 and 2,972.66 is: 4,459.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,519.40 : 12,779.84 = 2,972.66 : x
  2. Step 2: Convert to fraction form
    8,519.40/12,779.84 = 2,972.66/x
  3. Step 3: Cross multiply
    8,519.40x = 12,779.84 × 2,972.66
  4. Step 4: Simplify right side
    8,519.40x = 37,990,062.71
  5. Step 5: Solve for x
    x = 37,990,062.71/8,519.40
  6. Step 6: Final answer
    x = 4,459.24

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.