Home / 5,078.59-7,008.40-3,088.78

Finding the Fourth Proportional to 5,078.59, 7,008.40 and 3,088.78

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Solution

The fourth proportional to 5,078.59, 7,008.40 and 3,088.78 is: 4,262.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,078.59 : 7,008.40 = 3,088.78 : x
  2. Step 2: Convert to fraction form
    5,078.59/7,008.40 = 3,088.78/x
  3. Step 3: Cross multiply
    5,078.59x = 7,008.40 × 3,088.78
  4. Step 4: Simplify right side
    5,078.59x = 21,647,405.75
  5. Step 5: Solve for x
    x = 21,647,405.75/5,078.59
  6. Step 6: Final answer
    x = 4,262.48

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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.