Home / 5,111.70-7,667.55-3,642.90

Finding the Fourth Proportional to 5,111.70, 7,667.55 and 3,642.90

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Solution

The fourth proportional to 5,111.70, 7,667.55 and 3,642.90 is: 5,464.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,111.70 : 7,667.55 = 3,642.90 : x
  2. Step 2: Convert to fraction form
    5,111.70/7,667.55 = 3,642.90/x
  3. Step 3: Cross multiply
    5,111.70x = 7,667.55 × 3,642.90
  4. Step 4: Simplify right side
    5,111.70x = 27,932,117.90
  5. Step 5: Solve for x
    x = 27,932,117.90/5,111.70
  6. Step 6: Final answer
    x = 5,464.35

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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.