Home / 1,947.08-2,920.64-1,124.85

Finding the Fourth Proportional to 1,947.08, 2,920.64 and 1,124.85

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Solution

The fourth proportional to 1,947.08, 2,920.64 and 1,124.85 is: 1,687.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,947.08 : 2,920.64 = 1,124.85 : x
  2. Step 2: Convert to fraction form
    1,947.08/2,920.64 = 1,124.85/x
  3. Step 3: Cross multiply
    1,947.08x = 2,920.64 × 1,124.85
  4. Step 4: Simplify right side
    1,947.08x = 3,285,276.28
  5. Step 5: Solve for x
    x = 3,285,276.28/1,947.08
  6. Step 6: Final answer
    x = 1,687.29

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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.