Home / 8,938.16-12,334.65-5,400.71

Finding the Fourth Proportional to 8,938.16, 12,334.65 and 5,400.71

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Solution

The fourth proportional to 8,938.16, 12,334.65 and 5,400.71 is: 7,452.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,938.16 : 12,334.65 = 5,400.71 : x
  2. Step 2: Convert to fraction form
    8,938.16/12,334.65 = 5,400.71/x
  3. Step 3: Cross multiply
    8,938.16x = 12,334.65 × 5,400.71
  4. Step 4: Simplify right side
    8,938.16x = 66,615,867.60
  5. Step 5: Solve for x
    x = 66,615,867.60/8,938.16
  6. Step 6: Final answer
    x = 7,452.97

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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.