Home / 2,223.36-3,068.16-1,228.64

Finding the Fourth Proportional to 2,223.36, 3,068.16 and 1,228.64

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Solution

The fourth proportional to 2,223.36, 3,068.16 and 1,228.64 is: 1,695.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,223.36 : 3,068.16 = 1,228.64 : x
  2. Step 2: Convert to fraction form
    2,223.36/3,068.16 = 1,228.64/x
  3. Step 3: Cross multiply
    2,223.36x = 3,068.16 × 1,228.64
  4. Step 4: Simplify right side
    2,223.36x = 3,769,664.10
  5. Step 5: Solve for x
    x = 3,769,664.10/2,223.36
  6. Step 6: Final answer
    x = 1,695.48

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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.