Home / 9,120.38-12,585.80-5,141.25

Finding the Fourth Proportional to 9,120.38, 12,585.80 and 5,141.25

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Solution

The fourth proportional to 9,120.38, 12,585.80 and 5,141.25 is: 7,094.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,120.38 : 12,585.80 = 5,141.25 : x
  2. Step 2: Convert to fraction form
    9,120.38/12,585.80 = 5,141.25/x
  3. Step 3: Cross multiply
    9,120.38x = 12,585.80 × 5,141.25
  4. Step 4: Simplify right side
    9,120.38x = 64,706,718.54
  5. Step 5: Solve for x
    x = 64,706,718.54/9,120.38
  6. Step 6: Final answer
    x = 7,094.74

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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.