Home / 1,913.40-2,871.72-1,296.18

Finding the Fourth Proportional to 1,913.40, 2,871.72 and 1,296.18

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Solution

The fourth proportional to 1,913.40, 2,871.72 and 1,296.18 is: 1,945.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,913.40 : 2,871.72 = 1,296.18 : x
  2. Step 2: Convert to fraction form
    1,913.40/2,871.72 = 1,296.18/x
  3. Step 3: Cross multiply
    1,913.40x = 2,871.72 × 1,296.18
  4. Step 4: Simplify right side
    1,913.40x = 3,722,266.03
  5. Step 5: Solve for x
    x = 3,722,266.03/1,913.40
  6. Step 6: Final answer
    x = 1,945.37

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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.