Home / 5,078.24-7,007.76-2,840.08

Finding the Fourth Proportional to 5,078.24, 7,007.76 and 2,840.08

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Solution

The fourth proportional to 5,078.24, 7,007.76 and 2,840.08 is: 3,919.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,078.24 : 7,007.76 = 2,840.08 : x
  2. Step 2: Convert to fraction form
    5,078.24/7,007.76 = 2,840.08/x
  3. Step 3: Cross multiply
    5,078.24x = 7,007.76 × 2,840.08
  4. Step 4: Simplify right side
    5,078.24x = 19,902,599.02
  5. Step 5: Solve for x
    x = 19,902,599.02/5,078.24
  6. Step 6: Final answer
    x = 3,919.19

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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.