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Finding the Fourth Proportional to 8,959.95, 13,440.47 and 2,720.03

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Solution

The fourth proportional to 8,959.95, 13,440.47 and 2,720.03 is: 4,080.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,959.95 : 13,440.47 = 2,720.03 : x
  2. Step 2: Convert to fraction form
    8,959.95/13,440.47 = 2,720.03/x
  3. Step 3: Cross multiply
    8,959.95x = 13,440.47 × 2,720.03
  4. Step 4: Simplify right side
    8,959.95x = 36,558,400.81
  5. Step 5: Solve for x
    x = 36,558,400.81/8,959.95
  6. Step 6: Final answer
    x = 4,080.20

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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.