Home / 8,766.81-13,145.35-2,920.23

Finding the Fourth Proportional to 8,766.81, 13,145.35 and 2,920.23

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Solution

The fourth proportional to 8,766.81, 13,145.35 and 2,920.23 is: 4,378.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,766.81 : 13,145.35 = 2,920.23 : x
  2. Step 2: Convert to fraction form
    8,766.81/13,145.35 = 2,920.23/x
  3. Step 3: Cross multiply
    8,766.81x = 13,145.35 × 2,920.23
  4. Step 4: Simplify right side
    8,766.81x = 38,387,445.43
  5. Step 5: Solve for x
    x = 38,387,445.43/8,766.81
  6. Step 6: Final answer
    x = 4,378.72

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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.