Home / 5,159.62-7,119.70-2,921.32

Finding the Fourth Proportional to 5,159.62, 7,119.70 and 2,921.32

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Solution

The fourth proportional to 5,159.62, 7,119.70 and 2,921.32 is: 4,031.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,159.62 : 7,119.70 = 2,921.32 : x
  2. Step 2: Convert to fraction form
    5,159.62/7,119.70 = 2,921.32/x
  3. Step 3: Cross multiply
    5,159.62x = 7,119.70 × 2,921.32
  4. Step 4: Simplify right side
    5,159.62x = 20,798,922.00
  5. Step 5: Solve for x
    x = 20,798,922.00/5,159.62
  6. Step 6: Final answer
    x = 4,031.10

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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.