Home / 8,720.64-13,081.73-2,798.13

Finding the Fourth Proportional to 8,720.64, 13,081.73 and 2,798.13

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Solution

The fourth proportional to 8,720.64, 13,081.73 and 2,798.13 is: 4,197.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,720.64 : 13,081.73 = 2,798.13 : x
  2. Step 2: Convert to fraction form
    8,720.64/13,081.73 = 2,798.13/x
  3. Step 3: Cross multiply
    8,720.64x = 13,081.73 × 2,798.13
  4. Step 4: Simplify right side
    8,720.64x = 36,604,367.17
  5. Step 5: Solve for x
    x = 36,604,367.17/8,720.64
  6. Step 6: Final answer
    x = 4,197.44

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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.