Home / 2,103.08-3,154.84-787.46

Finding the Fourth Proportional to 2,103.08, 3,154.84 and 787.46

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Solution

The fourth proportional to 2,103.08, 3,154.84 and 787.46 is: 1,181.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,103.08 : 3,154.84 = 787.46 : x
  2. Step 2: Convert to fraction form
    2,103.08/3,154.84 = 787.46/x
  3. Step 3: Cross multiply
    2,103.08x = 3,154.84 × 787.46
  4. Step 4: Simplify right side
    2,103.08x = 2,484,292.56
  5. Step 5: Solve for x
    x = 2,484,292.56/2,103.08
  6. Step 6: Final answer
    x = 1,181.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.