Home / 2,218.99-3,062.19-1,224.28

Finding the Fourth Proportional to 2,218.99, 3,062.19 and 1,224.28

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Solution

The fourth proportional to 2,218.99, 3,062.19 and 1,224.28 is: 1,689.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,218.99 : 3,062.19 = 1,224.28 : x
  2. Step 2: Convert to fraction form
    2,218.99/3,062.19 = 1,224.28/x
  3. Step 3: Cross multiply
    2,218.99x = 3,062.19 × 1,224.28
  4. Step 4: Simplify right side
    2,218.99x = 3,748,977.97
  5. Step 5: Solve for x
    x = 3,748,977.97/2,218.99
  6. Step 6: Final answer
    x = 1,689.50

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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.