Home / 2,215.12-3,322.63-571.65

Finding the Fourth Proportional to 2,215.12, 3,322.63 and 571.65

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Solution

The fourth proportional to 2,215.12, 3,322.63 and 571.65 is: 857.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,215.12 : 3,322.63 = 571.65 : x
  2. Step 2: Convert to fraction form
    2,215.12/3,322.63 = 571.65/x
  3. Step 3: Cross multiply
    2,215.12x = 3,322.63 × 571.65
  4. Step 4: Simplify right side
    2,215.12x = 1,899,371.70
  5. Step 5: Solve for x
    x = 1,899,371.70/2,215.12
  6. Step 6: Final answer
    x = 857.46

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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.