Home / 6,118.11-8,435.52-5,172.21

Finding the Fourth Proportional to 6,118.11, 8,435.52 and 5,172.21

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Solution

The fourth proportional to 6,118.11, 8,435.52 and 5,172.21 is: 7,131.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,118.11 : 8,435.52 = 5,172.21 : x
  2. Step 2: Convert to fraction form
    6,118.11/8,435.52 = 5,172.21/x
  3. Step 3: Cross multiply
    6,118.11x = 8,435.52 × 5,172.21
  4. Step 4: Simplify right side
    6,118.11x = 43,630,280.90
  5. Step 5: Solve for x
    x = 43,630,280.90/6,118.11
  6. Step 6: Final answer
    x = 7,131.33

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Half scale
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Double scale
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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.