Home / 9,078.40-12,527.80-5,301.78

Finding the Fourth Proportional to 9,078.40, 12,527.80 and 5,301.78

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Solution

The fourth proportional to 9,078.40, 12,527.80 and 5,301.78 is: 7,316.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,078.40 : 12,527.80 = 5,301.78 : x
  2. Step 2: Convert to fraction form
    9,078.40/12,527.80 = 5,301.78/x
  3. Step 3: Cross multiply
    9,078.40x = 12,527.80 × 5,301.78
  4. Step 4: Simplify right side
    9,078.40x = 66,419,639.48
  5. Step 5: Solve for x
    x = 66,419,639.48/9,078.40
  6. Step 6: Final answer
    x = 7,316.23

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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.