Home / 7,235.20-9,984.72-4,091.36

Finding the Fourth Proportional to 7,235.20, 9,984.72 and 4,091.36

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Solution

The fourth proportional to 7,235.20, 9,984.72 and 4,091.36 is: 5,646.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,235.20 : 9,984.72 = 4,091.36 : x
  2. Step 2: Convert to fraction form
    7,235.20/9,984.72 = 4,091.36/x
  3. Step 3: Cross multiply
    7,235.20x = 9,984.72 × 4,091.36
  4. Step 4: Simplify right side
    7,235.20x = 40,851,084.02
  5. Step 5: Solve for x
    x = 40,851,084.02/7,235.20
  6. Step 6: Final answer
    x = 5,646.16

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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.