Home / 7,323.12-10,979-3,622.80

Finding the Fourth Proportional to 7,323.12, 10,979 and 3,622.80

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Solution

The fourth proportional to 7,323.12, 10,979 and 3,622.80 is: 5,431.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,323.12 : 10,979 = 3,622.80 : x
  2. Step 2: Convert to fraction form
    7,323.12/10,979 = 3,622.80/x
  3. Step 3: Cross multiply
    7,323.12x = 10,979 × 3,622.80
  4. Step 4: Simplify right side
    7,323.12x = 39,774,721.20
  5. Step 5: Solve for x
    x = 39,774,721.20/7,323.12
  6. Step 6: Final answer
    x = 5,431.39

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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.