Home / 2,217.77-3,060.23-1,223.09

Finding the Fourth Proportional to 2,217.77, 3,060.23 and 1,223.09

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Solution

The fourth proportional to 2,217.77, 3,060.23 and 1,223.09 is: 1,687.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,217.77 : 3,060.23 = 1,223.09 : x
  2. Step 2: Convert to fraction form
    2,217.77/3,060.23 = 1,223.09/x
  3. Step 3: Cross multiply
    2,217.77x = 3,060.23 × 1,223.09
  4. Step 4: Simplify right side
    2,217.77x = 3,742,938.25
  5. Step 5: Solve for x
    x = 3,742,938.25/2,217.77
  6. Step 6: Final answer
    x = 1,687.70

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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.