Home / 5,159.12-7,119.38-2,801.20

Finding the Fourth Proportional to 5,159.12, 7,119.38 and 2,801.20

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Solution

The fourth proportional to 5,159.12, 7,119.38 and 2,801.20 is: 3,865.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,159.12 : 7,119.38 = 2,801.20 : x
  2. Step 2: Convert to fraction form
    5,159.12/7,119.38 = 2,801.20/x
  3. Step 3: Cross multiply
    5,159.12x = 7,119.38 × 2,801.20
  4. Step 4: Simplify right side
    5,159.12x = 19,942,807.26
  5. Step 5: Solve for x
    x = 19,942,807.26/5,159.12
  6. Step 6: Final answer
    x = 3,865.54

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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.