Home / 3,115.42-4,667.65-2,776.43

Finding the Fourth Proportional to 3,115.42, 4,667.65 and 2,776.43

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Solution

The fourth proportional to 3,115.42, 4,667.65 and 2,776.43 is: 4,159.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,115.42 : 4,667.65 = 2,776.43 : x
  2. Step 2: Convert to fraction form
    3,115.42/4,667.65 = 2,776.43/x
  3. Step 3: Cross multiply
    3,115.42x = 4,667.65 × 2,776.43
  4. Step 4: Simplify right side
    3,115.42x = 12,959,408.22
  5. Step 5: Solve for x
    x = 12,959,408.22/3,115.42
  6. Step 6: Final answer
    x = 4,159.77

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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.