Home / 8,720.46-13,081.23-2,877.12

Finding the Fourth Proportional to 8,720.46, 13,081.23 and 2,877.12

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Solution

The fourth proportional to 8,720.46, 13,081.23 and 2,877.12 is: 4,315.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,720.46 : 13,081.23 = 2,877.12 : x
  2. Step 2: Convert to fraction form
    8,720.46/13,081.23 = 2,877.12/x
  3. Step 3: Cross multiply
    8,720.46x = 13,081.23 × 2,877.12
  4. Step 4: Simplify right side
    8,720.46x = 37,636,268.46
  5. Step 5: Solve for x
    x = 37,636,268.46/8,720.46
  6. Step 6: Final answer
    x = 4,315.86

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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.