Home / 5,178.31-7,143.79-3,499.10

Finding the Fourth Proportional to 5,178.31, 7,143.79 and 3,499.10

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Solution

The fourth proportional to 5,178.31, 7,143.79 and 3,499.10 is: 4,827.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,178.31 : 7,143.79 = 3,499.10 : x
  2. Step 2: Convert to fraction form
    5,178.31/7,143.79 = 3,499.10/x
  3. Step 3: Cross multiply
    5,178.31x = 7,143.79 × 3,499.10
  4. Step 4: Simplify right side
    5,178.31x = 24,996,851.26
  5. Step 5: Solve for x
    x = 24,996,851.26/5,178.31
  6. Step 6: Final answer
    x = 4,827.22

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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.