Home / 2,220.11-3,064.86-1,381.08

Finding the Fourth Proportional to 2,220.11, 3,064.86 and 1,381.08

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Solution

The fourth proportional to 2,220.11, 3,064.86 and 1,381.08 is: 1,906.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,220.11 : 3,064.86 = 1,381.08 : x
  2. Step 2: Convert to fraction form
    2,220.11/3,064.86 = 1,381.08/x
  3. Step 3: Cross multiply
    2,220.11x = 3,064.86 × 1,381.08
  4. Step 4: Simplify right side
    2,220.11x = 4,232,813.40
  5. Step 5: Solve for x
    x = 4,232,813.40/2,220.11
  6. Step 6: Final answer
    x = 1,906.58

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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.