Home / 1,912.80-2,870.64-1,295.04

Finding the Fourth Proportional to 1,912.80, 2,870.64 and 1,295.04

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Solution

The fourth proportional to 1,912.80, 2,870.64 and 1,295.04 is: 1,943.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,912.80 : 2,870.64 = 1,295.04 : x
  2. Step 2: Convert to fraction form
    1,912.80/2,870.64 = 1,295.04/x
  3. Step 3: Cross multiply
    1,912.80x = 2,870.64 × 1,295.04
  4. Step 4: Simplify right side
    1,912.80x = 3,717,593.63
  5. Step 5: Solve for x
    x = 3,717,593.63/1,912.80
  6. Step 6: Final answer
    x = 1,943.53

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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.