Home / 3,139.29-4,332.61-1,813

Finding the Fourth Proportional to 3,139.29, 4,332.61 and 1,813

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Solution

The fourth proportional to 3,139.29, 4,332.61 and 1,813 is: 2,502.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,139.29 : 4,332.61 = 1,813 : x
  2. Step 2: Convert to fraction form
    3,139.29/4,332.61 = 1,813/x
  3. Step 3: Cross multiply
    3,139.29x = 4,332.61 × 1,813
  4. Step 4: Simplify right side
    3,139.29x = 7,855,021.93
  5. Step 5: Solve for x
    x = 7,855,021.93/3,139.29
  6. Step 6: Final answer
    x = 2,502.17

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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.