Home / 2,872.33-4,309.40-1,312.27

Finding the Fourth Proportional to 2,872.33, 4,309.40 and 1,312.27

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Solution

The fourth proportional to 2,872.33, 4,309.40 and 1,312.27 is: 1,968.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,872.33 : 4,309.40 = 1,312.27 : x
  2. Step 2: Convert to fraction form
    2,872.33/4,309.40 = 1,312.27/x
  3. Step 3: Cross multiply
    2,872.33x = 4,309.40 × 1,312.27
  4. Step 4: Simplify right side
    2,872.33x = 5,655,088.85
  5. Step 5: Solve for x
    x = 5,655,088.85/2,872.33
  6. Step 6: Final answer
    x = 1,968.82

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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.