Home / 3,931.65-5,426.19-2,253.21

Finding the Fourth Proportional to 3,931.65, 5,426.19 and 2,253.21

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Solution

The fourth proportional to 3,931.65, 5,426.19 and 2,253.21 is: 3,109.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,931.65 : 5,426.19 = 2,253.21 : x
  2. Step 2: Convert to fraction form
    3,931.65/5,426.19 = 2,253.21/x
  3. Step 3: Cross multiply
    3,931.65x = 5,426.19 × 2,253.21
  4. Step 4: Simplify right side
    3,931.65x = 12,226,345.57
  5. Step 5: Solve for x
    x = 12,226,345.57/3,931.65
  6. Step 6: Final answer
    x = 3,109.72

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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.