Home / 2,217.09-3,058.42-1,320.20

Finding the Fourth Proportional to 2,217.09, 3,058.42 and 1,320.20

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Solution

The fourth proportional to 2,217.09, 3,058.42 and 1,320.20 is: 1,821.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,217.09 : 3,058.42 = 1,320.20 : x
  2. Step 2: Convert to fraction form
    2,217.09/3,058.42 = 1,320.20/x
  3. Step 3: Cross multiply
    2,217.09x = 3,058.42 × 1,320.20
  4. Step 4: Simplify right side
    2,217.09x = 4,037,726.08
  5. Step 5: Solve for x
    x = 4,037,726.08/2,217.09
  6. Step 6: Final answer
    x = 1,821.18

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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.