Home / 6,388.04-8,811.36-4,118.36

Finding the Fourth Proportional to 6,388.04, 8,811.36 and 4,118.36

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Solution

The fourth proportional to 6,388.04, 8,811.36 and 4,118.36 is: 5,680.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,388.04 : 8,811.36 = 4,118.36 : x
  2. Step 2: Convert to fraction form
    6,388.04/8,811.36 = 4,118.36/x
  3. Step 3: Cross multiply
    6,388.04x = 8,811.36 × 4,118.36
  4. Step 4: Simplify right side
    6,388.04x = 36,288,352.57
  5. Step 5: Solve for x
    x = 36,288,352.57/6,388.04
  6. Step 6: Final answer
    x = 5,680.67

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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.