Home / 5,606.40-7,728.84-3,835.20

Finding the Fourth Proportional to 5,606.40, 7,728.84 and 3,835.20

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Solution

The fourth proportional to 5,606.40, 7,728.84 and 3,835.20 is: 5,287.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,606.40 : 7,728.84 = 3,835.20 : x
  2. Step 2: Convert to fraction form
    5,606.40/7,728.84 = 3,835.20/x
  3. Step 3: Cross multiply
    5,606.40x = 7,728.84 × 3,835.20
  4. Step 4: Simplify right side
    5,606.40x = 29,641,647.17
  5. Step 5: Solve for x
    x = 29,641,647.17/5,606.40
  6. Step 6: Final answer
    x = 5,287.11

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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.