Home / 5,215.23-7,817.38-2,439.56

Finding the Fourth Proportional to 5,215.23, 7,817.38 and 2,439.56

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Solution

The fourth proportional to 5,215.23, 7,817.38 and 2,439.56 is: 3,656.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,215.23 : 7,817.38 = 2,439.56 : x
  2. Step 2: Convert to fraction form
    5,215.23/7,817.38 = 2,439.56/x
  3. Step 3: Cross multiply
    5,215.23x = 7,817.38 × 2,439.56
  4. Step 4: Simplify right side
    5,215.23x = 19,070,981.00
  5. Step 5: Solve for x
    x = 19,070,981.00/5,215.23
  6. Step 6: Final answer
    x = 3,656.79

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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.