Home / 3,927.68-5,417.76-2,806.65

Finding the Fourth Proportional to 3,927.68, 5,417.76 and 2,806.65

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Solution

The fourth proportional to 3,927.68, 5,417.76 and 2,806.65 is: 3,871.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,927.68 : 5,417.76 = 2,806.65 : x
  2. Step 2: Convert to fraction form
    3,927.68/5,417.76 = 2,806.65/x
  3. Step 3: Cross multiply
    3,927.68x = 5,417.76 × 2,806.65
  4. Step 4: Simplify right side
    3,927.68x = 15,205,756.10
  5. Step 5: Solve for x
    x = 15,205,756.10/3,927.68
  6. Step 6: Final answer
    x = 3,871.44

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1.5x scale

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.