Home / 6,639.28-9,160.32-4,282.80

Finding the Fourth Proportional to 6,639.28, 9,160.32 and 4,282.80

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Solution

The fourth proportional to 6,639.28, 9,160.32 and 4,282.80 is: 5,909.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,639.28 : 9,160.32 = 4,282.80 : x
  2. Step 2: Convert to fraction form
    6,639.28/9,160.32 = 4,282.80/x
  3. Step 3: Cross multiply
    6,639.28x = 9,160.32 × 4,282.80
  4. Step 4: Simplify right side
    6,639.28x = 39,231,818.50
  5. Step 5: Solve for x
    x = 39,231,818.50/6,639.28
  6. Step 6: Final answer
    x = 5,909.05

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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.