Home / 8,720.55-13,080.77-2,877.63

Finding the Fourth Proportional to 8,720.55, 13,080.77 and 2,877.63

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Solution

The fourth proportional to 8,720.55, 13,080.77 and 2,877.63 is: 4,316.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,720.55 : 13,080.77 = 2,877.63 : x
  2. Step 2: Convert to fraction form
    8,720.55/13,080.77 = 2,877.63/x
  3. Step 3: Cross multiply
    8,720.55x = 13,080.77 × 2,877.63
  4. Step 4: Simplify right side
    8,720.55x = 37,641,601.79
  5. Step 5: Solve for x
    x = 37,641,601.79/8,720.55
  6. Step 6: Final answer
    x = 4,316.43

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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.