Home / 2,806.65-3,871.53-1,758.51

Finding the Fourth Proportional to 2,806.65, 3,871.53 and 1,758.51

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Solution

The fourth proportional to 2,806.65, 3,871.53 and 1,758.51 is: 2,425.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,806.65 : 3,871.53 = 1,758.51 : x
  2. Step 2: Convert to fraction form
    2,806.65/3,871.53 = 1,758.51/x
  3. Step 3: Cross multiply
    2,806.65x = 3,871.53 × 1,758.51
  4. Step 4: Simplify right side
    2,806.65x = 6,808,124.22
  5. Step 5: Solve for x
    x = 6,808,124.22/2,806.65
  6. Step 6: Final answer
    x = 2,425.71

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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.