Home / 6,639.12-9,161.99-3,655.17

Finding the Fourth Proportional to 6,639.12, 9,161.99 and 3,655.17

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Solution

The fourth proportional to 6,639.12, 9,161.99 and 3,655.17 is: 5,044.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,639.12 : 9,161.99 = 3,655.17 : x
  2. Step 2: Convert to fraction form
    6,639.12/9,161.99 = 3,655.17/x
  3. Step 3: Cross multiply
    6,639.12x = 9,161.99 × 3,655.17
  4. Step 4: Simplify right side
    6,639.12x = 33,488,630.99
  5. Step 5: Solve for x
    x = 33,488,630.99/6,639.12
  6. Step 6: Final answer
    x = 5,044.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.