Home / 3,139.57-4,332.27-1,813.69

Finding the Fourth Proportional to 3,139.57, 4,332.27 and 1,813.69

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Solution

The fourth proportional to 3,139.57, 4,332.27 and 1,813.69 is: 2,502.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,139.57 : 4,332.27 = 1,813.69 : x
  2. Step 2: Convert to fraction form
    3,139.57/4,332.27 = 1,813.69/x
  3. Step 3: Cross multiply
    3,139.57x = 4,332.27 × 1,813.69
  4. Step 4: Simplify right side
    3,139.57x = 7,857,373.11
  5. Step 5: Solve for x
    x = 7,857,373.11/3,139.57
  6. Step 6: Final answer
    x = 2,502.69

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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.