Home / 7,118.28-10,678.77-2,188.35

Finding the Fourth Proportional to 7,118.28, 10,678.77 and 2,188.35

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Solution

The fourth proportional to 7,118.28, 10,678.77 and 2,188.35 is: 3,282.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,118.28 : 10,678.77 = 2,188.35 : x
  2. Step 2: Convert to fraction form
    7,118.28/10,678.77 = 2,188.35/x
  3. Step 3: Cross multiply
    7,118.28x = 10,678.77 × 2,188.35
  4. Step 4: Simplify right side
    7,118.28x = 23,368,886.33
  5. Step 5: Solve for x
    x = 23,368,886.33/7,118.28
  6. Step 6: Final answer
    x = 3,282.94

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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.