Home / 1,947.39-2,687.18-1,108.01

Finding the Fourth Proportional to 1,947.39, 2,687.18 and 1,108.01

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Solution

The fourth proportional to 1,947.39, 2,687.18 and 1,108.01 is: 1,528.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,947.39 : 2,687.18 = 1,108.01 : x
  2. Step 2: Convert to fraction form
    1,947.39/2,687.18 = 1,108.01/x
  3. Step 3: Cross multiply
    1,947.39x = 2,687.18 × 1,108.01
  4. Step 4: Simplify right side
    1,947.39x = 2,977,432.84
  5. Step 5: Solve for x
    x = 2,977,432.84/1,947.39
  6. Step 6: Final answer
    x = 1,528.93

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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.