Home / 2,788.25-3,844.90-1,948.64

Finding the Fourth Proportional to 2,788.25, 3,844.90 and 1,948.64

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Solution

The fourth proportional to 2,788.25, 3,844.90 and 1,948.64 is: 2,687.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,788.25 : 3,844.90 = 1,948.64 : x
  2. Step 2: Convert to fraction form
    2,788.25/3,844.90 = 1,948.64/x
  3. Step 3: Cross multiply
    2,788.25x = 3,844.90 × 1,948.64
  4. Step 4: Simplify right side
    2,788.25x = 7,492,325.94
  5. Step 5: Solve for x
    x = 7,492,325.94/2,788.25
  6. Step 6: Final answer
    x = 2,687.11

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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.