Home / 2,874.13-4,309-1,313.05

Finding the Fourth Proportional to 2,874.13, 4,309 and 1,313.05

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Solution

The fourth proportional to 2,874.13, 4,309 and 1,313.05 is: 1,968.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,874.13 : 4,309 = 1,313.05 : x
  2. Step 2: Convert to fraction form
    2,874.13/4,309 = 1,313.05/x
  3. Step 3: Cross multiply
    2,874.13x = 4,309 × 1,313.05
  4. Step 4: Simplify right side
    2,874.13x = 5,657,932.45
  5. Step 5: Solve for x
    x = 5,657,932.45/2,874.13
  6. Step 6: Final answer
    x = 1,968.57

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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.