Home / 5,228.31-7,215.07-2,870.61

Finding the Fourth Proportional to 5,228.31, 7,215.07 and 2,870.61

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Solution

The fourth proportional to 5,228.31, 7,215.07 and 2,870.61 is: 3,961.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,228.31 : 7,215.07 = 2,870.61 : x
  2. Step 2: Convert to fraction form
    5,228.31/7,215.07 = 2,870.61/x
  3. Step 3: Cross multiply
    5,228.31x = 7,215.07 × 2,870.61
  4. Step 4: Simplify right side
    5,228.31x = 20,711,652.09
  5. Step 5: Solve for x
    x = 20,711,652.09/5,228.31
  6. Step 6: Final answer
    x = 3,961.44

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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.