Home / 9,120.08-12,585.28-5,141.20

Finding the Fourth Proportional to 9,120.08, 12,585.28 and 5,141.20

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Solution

The fourth proportional to 9,120.08, 12,585.28 and 5,141.20 is: 7,094.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,120.08 : 12,585.28 = 5,141.20 : x
  2. Step 2: Convert to fraction form
    9,120.08/12,585.28 = 5,141.20/x
  3. Step 3: Cross multiply
    9,120.08x = 12,585.28 × 5,141.20
  4. Step 4: Simplify right side
    9,120.08x = 64,703,441.54
  5. Step 5: Solve for x
    x = 64,703,441.54/9,120.08
  6. Step 6: Final answer
    x = 7,094.61

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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.