Home / 2,807.12-4,207.28-1,243.76

Finding the Fourth Proportional to 2,807.12, 4,207.28 and 1,243.76

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Solution

The fourth proportional to 2,807.12, 4,207.28 and 1,243.76 is: 1,864.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,807.12 : 4,207.28 = 1,243.76 : x
  2. Step 2: Convert to fraction form
    2,807.12/4,207.28 = 1,243.76/x
  3. Step 3: Cross multiply
    2,807.12x = 4,207.28 × 1,243.76
  4. Step 4: Simplify right side
    2,807.12x = 5,232,846.57
  5. Step 5: Solve for x
    x = 5,232,846.57/2,807.12
  6. Step 6: Final answer
    x = 1,864.13

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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.