Home / 8,940.28-12,335.78-5,403.68

Finding the Fourth Proportional to 8,940.28, 12,335.78 and 5,403.68

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Solution

The fourth proportional to 8,940.28, 12,335.78 and 5,403.68 is: 7,455.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,940.28 : 12,335.78 = 5,403.68 : x
  2. Step 2: Convert to fraction form
    8,940.28/12,335.78 = 5,403.68/x
  3. Step 3: Cross multiply
    8,940.28x = 12,335.78 × 5,403.68
  4. Step 4: Simplify right side
    8,940.28x = 66,658,607.67
  5. Step 5: Solve for x
    x = 66,658,607.67/8,940.28
  6. Step 6: Final answer
    x = 7,455.99

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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.