Home / 3,139.63-4,332.49-1,813.12

Finding the Fourth Proportional to 3,139.63, 4,332.49 and 1,813.12

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Solution

The fourth proportional to 3,139.63, 4,332.49 and 1,813.12 is: 2,501.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,139.63 : 4,332.49 = 1,813.12 : x
  2. Step 2: Convert to fraction form
    3,139.63/4,332.49 = 1,813.12/x
  3. Step 3: Cross multiply
    3,139.63x = 4,332.49 × 1,813.12
  4. Step 4: Simplify right side
    3,139.63x = 7,855,324.27
  5. Step 5: Solve for x
    x = 7,855,324.27/3,139.63
  6. Step 6: Final answer
    x = 2,501.99

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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.