Home / 8,118.28-11,212.32-6,347.35

Finding the Fourth Proportional to 8,118.28, 11,212.32 and 6,347.35

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Solution

The fourth proportional to 8,118.28, 11,212.32 and 6,347.35 is: 8,766.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,118.28 : 11,212.32 = 6,347.35 : x
  2. Step 2: Convert to fraction form
    8,118.28/11,212.32 = 6,347.35/x
  3. Step 3: Cross multiply
    8,118.28x = 11,212.32 × 6,347.35
  4. Step 4: Simplify right side
    8,118.28x = 71,168,519.35
  5. Step 5: Solve for x
    x = 71,168,519.35/8,118.28
  6. Step 6: Final answer
    x = 8,766.45

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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.