Home / 8,720.96-13,079.58-2,876.18

Finding the Fourth Proportional to 8,720.96, 13,079.58 and 2,876.18

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Solution

The fourth proportional to 8,720.96, 13,079.58 and 2,876.18 is: 4,313.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,720.96 : 13,079.58 = 2,876.18 : x
  2. Step 2: Convert to fraction form
    8,720.96/13,079.58 = 2,876.18/x
  3. Step 3: Cross multiply
    8,720.96x = 13,079.58 × 2,876.18
  4. Step 4: Simplify right side
    8,720.96x = 37,619,226.40
  5. Step 5: Solve for x
    x = 37,619,226.40/8,720.96
  6. Step 6: Final answer
    x = 4,313.66

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1.5x scale

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.