Home / 5,078.28-7,007.61-2,840.22

Finding the Fourth Proportional to 5,078.28, 7,007.61 and 2,840.22

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Solution

The fourth proportional to 5,078.28, 7,007.61 and 2,840.22 is: 3,919.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,078.28 : 7,007.61 = 2,840.22 : x
  2. Step 2: Convert to fraction form
    5,078.28/7,007.61 = 2,840.22/x
  3. Step 3: Cross multiply
    5,078.28x = 7,007.61 × 2,840.22
  4. Step 4: Simplify right side
    5,078.28x = 19,903,154.07
  5. Step 5: Solve for x
    x = 19,903,154.07/5,078.28
  6. Step 6: Final answer
    x = 3,919.27

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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.