Home / 3,940.93-5,440.28-2,807.33

Finding the Fourth Proportional to 3,940.93, 5,440.28 and 2,807.33

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Solution

The fourth proportional to 3,940.93, 5,440.28 and 2,807.33 is: 3,875.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,940.93 : 5,440.28 = 2,807.33 : x
  2. Step 2: Convert to fraction form
    3,940.93/5,440.28 = 2,807.33/x
  3. Step 3: Cross multiply
    3,940.93x = 5,440.28 × 2,807.33
  4. Step 4: Simplify right side
    3,940.93x = 15,272,661.25
  5. Step 5: Solve for x
    x = 15,272,661.25/3,940.93
  6. Step 6: Final answer
    x = 3,875.40

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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.