Home / 1,672.10-2,309.70-1,283.92

Finding the Fourth Proportional to 1,672.10, 2,309.70 and 1,283.92

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Solution

The fourth proportional to 1,672.10, 2,309.70 and 1,283.92 is: 1,773.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,672.10 : 2,309.70 = 1,283.92 : x
  2. Step 2: Convert to fraction form
    1,672.10/2,309.70 = 1,283.92/x
  3. Step 3: Cross multiply
    1,672.10x = 2,309.70 × 1,283.92
  4. Step 4: Simplify right side
    1,672.10x = 2,965,470.02
  5. Step 5: Solve for x
    x = 2,965,470.02/1,672.10
  6. Step 6: Final answer
    x = 1,773.50

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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.