Home / 2,196.36-3,278.64-1,868.16

Finding the Fourth Proportional to 2,196.36, 3,278.64 and 1,868.16

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Solution

The fourth proportional to 2,196.36, 3,278.64 and 1,868.16 is: 2,788.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,196.36 : 3,278.64 = 1,868.16 : x
  2. Step 2: Convert to fraction form
    2,196.36/3,278.64 = 1,868.16/x
  3. Step 3: Cross multiply
    2,196.36x = 3,278.64 × 1,868.16
  4. Step 4: Simplify right side
    2,196.36x = 6,125,024.10
  5. Step 5: Solve for x
    x = 6,125,024.10/2,196.36
  6. Step 6: Final answer
    x = 2,788.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.