Home / 6,634.68-9,155.63-3,909.21

Finding the Fourth Proportional to 6,634.68, 9,155.63 and 3,909.21

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Solution

The fourth proportional to 6,634.68, 9,155.63 and 3,909.21 is: 5,394.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,634.68 : 9,155.63 = 3,909.21 : x
  2. Step 2: Convert to fraction form
    6,634.68/9,155.63 = 3,909.21/x
  3. Step 3: Cross multiply
    6,634.68x = 9,155.63 × 3,909.21
  4. Step 4: Simplify right side
    6,634.68x = 35,791,260.81
  5. Step 5: Solve for x
    x = 35,791,260.81/6,634.68
  6. Step 6: Final answer
    x = 5,394.57

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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.