Home / 2,788.50-3,848.10-1,609.55

Finding the Fourth Proportional to 2,788.50, 3,848.10 and 1,609.55

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Solution

The fourth proportional to 2,788.50, 3,848.10 and 1,609.55 is: 2,221.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,788.50 : 3,848.10 = 1,609.55 : x
  2. Step 2: Convert to fraction form
    2,788.50/3,848.10 = 1,609.55/x
  3. Step 3: Cross multiply
    2,788.50x = 3,848.10 × 1,609.55
  4. Step 4: Simplify right side
    2,788.50x = 6,193,709.36
  5. Step 5: Solve for x
    x = 6,193,709.36/2,788.50
  6. Step 6: Final answer
    x = 2,221.16

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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.