Home / 6,724.16-9,280.80-4,239.68

Finding the Fourth Proportional to 6,724.16, 9,280.80 and 4,239.68

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Solution

The fourth proportional to 6,724.16, 9,280.80 and 4,239.68 is: 5,851.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,724.16 : 9,280.80 = 4,239.68 : x
  2. Step 2: Convert to fraction form
    6,724.16/9,280.80 = 4,239.68/x
  3. Step 3: Cross multiply
    6,724.16x = 9,280.80 × 4,239.68
  4. Step 4: Simplify right side
    6,724.16x = 39,347,622.14
  5. Step 5: Solve for x
    x = 39,347,622.14/6,724.16
  6. Step 6: Final answer
    x = 5,851.68

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1.5x scale

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.