Home / 8,639.48-12,959.25-2,635.63

Finding the Fourth Proportional to 8,639.48, 12,959.25 and 2,635.63

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Solution

The fourth proportional to 8,639.48, 12,959.25 and 2,635.63 is: 3,953.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,639.48 : 12,959.25 = 2,635.63 : x
  2. Step 2: Convert to fraction form
    8,639.48/12,959.25 = 2,635.63/x
  3. Step 3: Cross multiply
    8,639.48x = 12,959.25 × 2,635.63
  4. Step 4: Simplify right side
    8,639.48x = 34,155,755.68
  5. Step 5: Solve for x
    x = 34,155,755.68/8,639.48
  6. Step 6: Final answer
    x = 3,953.45

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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.