Home / 2,947.80-4,417.25-1,972.16

Finding the Fourth Proportional to 2,947.80, 4,417.25 and 1,972.16

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Solution

The fourth proportional to 2,947.80, 4,417.25 and 1,972.16 is: 2,955.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,947.80 : 4,417.25 = 1,972.16 : x
  2. Step 2: Convert to fraction form
    2,947.80/4,417.25 = 1,972.16/x
  3. Step 3: Cross multiply
    2,947.80x = 4,417.25 × 1,972.16
  4. Step 4: Simplify right side
    2,947.80x = 8,711,491.81
  5. Step 5: Solve for x
    x = 8,711,491.81/2,947.80
  6. Step 6: Final answer
    x = 2,955.25

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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.