Home / 5,228.61-7,215.48-2,870.73

Finding the Fourth Proportional to 5,228.61, 7,215.48 and 2,870.73

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Solution

The fourth proportional to 5,228.61, 7,215.48 and 2,870.73 is: 3,961.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,228.61 : 7,215.48 = 2,870.73 : x
  2. Step 2: Convert to fraction form
    5,228.61/7,215.48 = 2,870.73/x
  3. Step 3: Cross multiply
    5,228.61x = 7,215.48 × 2,870.73
  4. Step 4: Simplify right side
    5,228.61x = 20,713,694.90
  5. Step 5: Solve for x
    x = 20,713,694.90/5,228.61
  6. Step 6: Final answer
    x = 3,961.61

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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.