Home / 5,159.92-7,119.12-2,921.44

Finding the Fourth Proportional to 5,159.92, 7,119.12 and 2,921.44

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Solution

The fourth proportional to 5,159.92, 7,119.12 and 2,921.44 is: 4,030.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,159.92 : 7,119.12 = 2,921.44 : x
  2. Step 2: Convert to fraction form
    5,159.92/7,119.12 = 2,921.44/x
  3. Step 3: Cross multiply
    5,159.92x = 7,119.12 × 2,921.44
  4. Step 4: Simplify right side
    5,159.92x = 20,798,081.93
  5. Step 5: Solve for x
    x = 20,798,081.93/5,159.92
  6. Step 6: Final answer
    x = 4,030.70

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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.