Home / 3,215.11-4,437.03-1,798.78

Finding the Fourth Proportional to 3,215.11, 4,437.03 and 1,798.78

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Solution

The fourth proportional to 3,215.11, 4,437.03 and 1,798.78 is: 2,482.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,215.11 : 4,437.03 = 1,798.78 : x
  2. Step 2: Convert to fraction form
    3,215.11/4,437.03 = 1,798.78/x
  3. Step 3: Cross multiply
    3,215.11x = 4,437.03 × 1,798.78
  4. Step 4: Simplify right side
    3,215.11x = 7,981,240.82
  5. Step 5: Solve for x
    x = 7,981,240.82/3,215.11
  6. Step 6: Final answer
    x = 2,482.42

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Double scale
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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.