Home / 1,371.65-2,045.58-1,298.75

Finding the Fourth Proportional to 1,371.65, 2,045.58 and 1,298.75

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Solution

The fourth proportional to 1,371.65, 2,045.58 and 1,298.75 is: 1,936.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,371.65 : 2,045.58 = 1,298.75 : x
  2. Step 2: Convert to fraction form
    1,371.65/2,045.58 = 1,298.75/x
  3. Step 3: Cross multiply
    1,371.65x = 2,045.58 × 1,298.75
  4. Step 4: Simplify right side
    1,371.65x = 2,656,681.93
  5. Step 5: Solve for x
    x = 2,656,681.93/1,371.65
  6. Step 6: Final answer
    x = 1,936.86

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.