Home / 5,215.18-7,822.84-1,928.24

Finding the Fourth Proportional to 5,215.18, 7,822.84 and 1,928.24

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Solution

The fourth proportional to 5,215.18, 7,822.84 and 1,928.24 is: 2,892.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,215.18 : 7,822.84 = 1,928.24 : x
  2. Step 2: Convert to fraction form
    5,215.18/7,822.84 = 1,928.24/x
  3. Step 3: Cross multiply
    5,215.18x = 7,822.84 × 1,928.24
  4. Step 4: Simplify right side
    5,215.18x = 15,084,313.00
  5. Step 5: Solve for x
    x = 15,084,313.00/5,215.18
  6. Step 6: Final answer
    x = 2,892.39

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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.