Home / 2,223.75-3,068.70-1,228.98

Finding the Fourth Proportional to 2,223.75, 3,068.70 and 1,228.98

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Solution

The fourth proportional to 2,223.75, 3,068.70 and 1,228.98 is: 1,695.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,223.75 : 3,068.70 = 1,228.98 : x
  2. Step 2: Convert to fraction form
    2,223.75/3,068.70 = 1,228.98/x
  3. Step 3: Cross multiply
    2,223.75x = 3,068.70 × 1,228.98
  4. Step 4: Simplify right side
    2,223.75x = 3,771,370.93
  5. Step 5: Solve for x
    x = 3,771,370.93/2,223.75
  6. Step 6: Final answer
    x = 1,695.95

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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.