Home / 6,639.73-9,161.57-4,122.45

Finding the Fourth Proportional to 6,639.73, 9,161.57 and 4,122.45

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Solution

The fourth proportional to 6,639.73, 9,161.57 and 4,122.45 is: 5,688.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,639.73 : 9,161.57 = 4,122.45 : x
  2. Step 2: Convert to fraction form
    6,639.73/9,161.57 = 4,122.45/x
  3. Step 3: Cross multiply
    6,639.73x = 9,161.57 × 4,122.45
  4. Step 4: Simplify right side
    6,639.73x = 37,768,124.55
  5. Step 5: Solve for x
    x = 37,768,124.55/6,639.73
  6. Step 6: Final answer
    x = 5,688.20

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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.