Home / 5,158.90-7,119.27-2,801.02

Finding the Fourth Proportional to 5,158.90, 7,119.27 and 2,801.02

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Solution

The fourth proportional to 5,158.90, 7,119.27 and 2,801.02 is: 3,865.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,158.90 : 7,119.27 = 2,801.02 : x
  2. Step 2: Convert to fraction form
    5,158.90/7,119.27 = 2,801.02/x
  3. Step 3: Cross multiply
    5,158.90x = 7,119.27 × 2,801.02
  4. Step 4: Simplify right side
    5,158.90x = 19,941,217.66
  5. Step 5: Solve for x
    x = 19,941,217.66/5,158.90
  6. Step 6: Final answer
    x = 3,865.40

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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.