Home / 1,965.65-2,715.35-1,788.30

Finding the Fourth Proportional to 1,965.65, 2,715.35 and 1,788.30

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Solution

The fourth proportional to 1,965.65, 2,715.35 and 1,788.30 is: 2,470.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,965.65 : 2,715.35 = 1,788.30 : x
  2. Step 2: Convert to fraction form
    1,965.65/2,715.35 = 1,788.30/x
  3. Step 3: Cross multiply
    1,965.65x = 2,715.35 × 1,788.30
  4. Step 4: Simplify right side
    1,965.65x = 4,855,864.88
  5. Step 5: Solve for x
    x = 4,855,864.88/1,965.65
  6. Step 6: Final answer
    x = 2,470.36

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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.