Home / 9,119.40-12,585.96-5,141.28

Finding the Fourth Proportional to 9,119.40, 12,585.96 and 5,141.28

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Solution

The fourth proportional to 9,119.40, 12,585.96 and 5,141.28 is: 7,095.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,119.40 : 12,585.96 = 5,141.28 : x
  2. Step 2: Convert to fraction form
    9,119.40/12,585.96 = 5,141.28/x
  3. Step 3: Cross multiply
    9,119.40x = 12,585.96 × 5,141.28
  4. Step 4: Simplify right side
    9,119.40x = 64,707,944.43
  5. Step 5: Solve for x
    x = 64,707,944.43/9,119.40
  6. Step 6: Final answer
    x = 7,095.64

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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.