Home / 2,220.81-3,065.91-1,382.23

Finding the Fourth Proportional to 2,220.81, 3,065.91 and 1,382.23

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Solution

The fourth proportional to 2,220.81, 3,065.91 and 1,382.23 is: 1,908.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,220.81 : 3,065.91 = 1,382.23 : x
  2. Step 2: Convert to fraction form
    2,220.81/3,065.91 = 1,382.23/x
  3. Step 3: Cross multiply
    2,220.81x = 3,065.91 × 1,382.23
  4. Step 4: Simplify right side
    2,220.81x = 4,237,792.78
  5. Step 5: Solve for x
    x = 4,237,792.78/2,220.81
  6. Step 6: Final answer
    x = 1,908.22

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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.