Home / 2,778.96-3,826.80-2,484.12

Finding the Fourth Proportional to 2,778.96, 3,826.80 and 2,484.12

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Solution

The fourth proportional to 2,778.96, 3,826.80 and 2,484.12 is: 3,420.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,778.96 : 3,826.80 = 2,484.12 : x
  2. Step 2: Convert to fraction form
    2,778.96/3,826.80 = 2,484.12/x
  3. Step 3: Cross multiply
    2,778.96x = 3,826.80 × 2,484.12
  4. Step 4: Simplify right side
    2,778.96x = 9,506,230.42
  5. Step 5: Solve for x
    x = 9,506,230.42/2,778.96
  6. Step 6: Final answer
    x = 3,420.79

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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.