Home / 5,139.12-7,701.93-2,800.11

Finding the Fourth Proportional to 5,139.12, 7,701.93 and 2,800.11

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Solution

The fourth proportional to 5,139.12, 7,701.93 and 2,800.11 is: 4,196.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,139.12 : 7,701.93 = 2,800.11 : x
  2. Step 2: Convert to fraction form
    5,139.12/7,701.93 = 2,800.11/x
  3. Step 3: Cross multiply
    5,139.12x = 7,701.93 × 2,800.11
  4. Step 4: Simplify right side
    5,139.12x = 21,566,251.21
  5. Step 5: Solve for x
    x = 21,566,251.21/5,139.12
  6. Step 6: Final answer
    x = 4,196.49

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.