Home / 5,188.08-7,781.01-1,678.41

Finding the Fourth Proportional to 5,188.08, 7,781.01 and 1,678.41

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Solution

The fourth proportional to 5,188.08, 7,781.01 and 1,678.41 is: 2,517.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,188.08 : 7,781.01 = 1,678.41 : x
  2. Step 2: Convert to fraction form
    5,188.08/7,781.01 = 1,678.41/x
  3. Step 3: Cross multiply
    5,188.08x = 7,781.01 × 1,678.41
  4. Step 4: Simplify right side
    5,188.08x = 13,059,724.99
  5. Step 5: Solve for x
    x = 13,059,724.99/5,188.08
  6. Step 6: Final answer
    x = 2,517.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.