Home / 2,219.19-3,062.50-1,224.45

Finding the Fourth Proportional to 2,219.19, 3,062.50 and 1,224.45

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Solution

The fourth proportional to 2,219.19, 3,062.50 and 1,224.45 is: 1,689.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,219.19 : 3,062.50 = 1,224.45 : x
  2. Step 2: Convert to fraction form
    2,219.19/3,062.50 = 1,224.45/x
  3. Step 3: Cross multiply
    2,219.19x = 3,062.50 × 1,224.45
  4. Step 4: Simplify right side
    2,219.19x = 3,749,878.13
  5. Step 5: Solve for x
    x = 3,749,878.13/2,219.19
  6. Step 6: Final answer
    x = 1,689.75

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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.