Home / 2,129.29-3,193.49-1,206.63

Finding the Fourth Proportional to 2,129.29, 3,193.49 and 1,206.63

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Solution

The fourth proportional to 2,129.29, 3,193.49 and 1,206.63 is: 1,809.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,129.29 : 3,193.49 = 1,206.63 : x
  2. Step 2: Convert to fraction form
    2,129.29/3,193.49 = 1,206.63/x
  3. Step 3: Cross multiply
    2,129.29x = 3,193.49 × 1,206.63
  4. Step 4: Simplify right side
    2,129.29x = 3,853,363.86
  5. Step 5: Solve for x
    x = 3,853,363.86/2,129.29
  6. Step 6: Final answer
    x = 1,809.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.