Home / 8,376.80-12,567.12-4,677.20

Finding the Fourth Proportional to 8,376.80, 12,567.12 and 4,677.20

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Solution

The fourth proportional to 8,376.80, 12,567.12 and 4,677.20 is: 7,016.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,376.80 : 12,567.12 = 4,677.20 : x
  2. Step 2: Convert to fraction form
    8,376.80/12,567.12 = 4,677.20/x
  3. Step 3: Cross multiply
    8,376.80x = 12,567.12 × 4,677.20
  4. Step 4: Simplify right side
    8,376.80x = 58,778,933.66
  5. Step 5: Solve for x
    x = 58,778,933.66/8,376.80
  6. Step 6: Final answer
    x = 7,016.87

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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.