Home / 5,215.57-7,823.14-1,928.59

Finding the Fourth Proportional to 5,215.57, 7,823.14 and 1,928.59

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Solution

The fourth proportional to 5,215.57, 7,823.14 and 1,928.59 is: 2,892.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,215.57 : 7,823.14 = 1,928.59 : x
  2. Step 2: Convert to fraction form
    5,215.57/7,823.14 = 1,928.59/x
  3. Step 3: Cross multiply
    5,215.57x = 7,823.14 × 1,928.59
  4. Step 4: Simplify right side
    5,215.57x = 15,087,629.57
  5. Step 5: Solve for x
    x = 15,087,629.57/5,215.57
  6. Step 6: Final answer
    x = 2,892.81

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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.