Home / 2,947.29-4,421.49-1,908.31

Finding the Fourth Proportional to 2,947.29, 4,421.49 and 1,908.31

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Solution

The fourth proportional to 2,947.29, 4,421.49 and 1,908.31 is: 2,862.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,947.29 : 4,421.49 = 1,908.31 : x
  2. Step 2: Convert to fraction form
    2,947.29/4,421.49 = 1,908.31/x
  3. Step 3: Cross multiply
    2,947.29x = 4,421.49 × 1,908.31
  4. Step 4: Simplify right side
    2,947.29x = 8,437,563.66
  5. Step 5: Solve for x
    x = 8,437,563.66/2,947.29
  6. Step 6: Final answer
    x = 2,862.82

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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.