Home / 2,787.99-3,848.26-1,903.77

Finding the Fourth Proportional to 2,787.99, 3,848.26 and 1,903.77

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Solution

The fourth proportional to 2,787.99, 3,848.26 and 1,903.77 is: 2,627.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,787.99 : 3,848.26 = 1,903.77 : x
  2. Step 2: Convert to fraction form
    2,787.99/3,848.26 = 1,903.77/x
  3. Step 3: Cross multiply
    2,787.99x = 3,848.26 × 1,903.77
  4. Step 4: Simplify right side
    2,787.99x = 7,326,200.75
  5. Step 5: Solve for x
    x = 7,326,200.75/2,787.99
  6. Step 6: Final answer
    x = 2,627.78

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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.