Home / 2,947.32-4,420.92-1,214.76

Finding the Fourth Proportional to 2,947.32, 4,420.92 and 1,214.76

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Solution

The fourth proportional to 2,947.32, 4,420.92 and 1,214.76 is: 1,822.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,947.32 : 4,420.92 = 1,214.76 : x
  2. Step 2: Convert to fraction form
    2,947.32/4,420.92 = 1,214.76/x
  3. Step 3: Cross multiply
    2,947.32x = 4,420.92 × 1,214.76
  4. Step 4: Simplify right side
    2,947.32x = 5,370,356.78
  5. Step 5: Solve for x
    x = 5,370,356.78/2,947.32
  6. Step 6: Final answer
    x = 1,822.12

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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.