Home / 3,130.68-4,332.78-2,690.04

Finding the Fourth Proportional to 3,130.68, 4,332.78 and 2,690.04

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Solution

The fourth proportional to 3,130.68, 4,332.78 and 2,690.04 is: 3,722.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,130.68 : 4,332.78 = 2,690.04 : x
  2. Step 2: Convert to fraction form
    3,130.68/4,332.78 = 2,690.04/x
  3. Step 3: Cross multiply
    3,130.68x = 4,332.78 × 2,690.04
  4. Step 4: Simplify right side
    3,130.68x = 11,655,351.51
  5. Step 5: Solve for x
    x = 11,655,351.51/3,130.68
  6. Step 6: Final answer
    x = 3,722.95

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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.