Home / 6,891.90-9,511.34-4,240.23

Finding the Fourth Proportional to 6,891.90, 9,511.34 and 4,240.23

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Solution

The fourth proportional to 6,891.90, 9,511.34 and 4,240.23 is: 5,851.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,891.90 : 9,511.34 = 4,240.23 : x
  2. Step 2: Convert to fraction form
    6,891.90/9,511.34 = 4,240.23/x
  3. Step 3: Cross multiply
    6,891.90x = 9,511.34 × 4,240.23
  4. Step 4: Simplify right side
    6,891.90x = 40,330,248.01
  5. Step 5: Solve for x
    x = 40,330,248.01/6,891.90
  6. Step 6: Final answer
    x = 5,851.83

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Half scale
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Double scale
Find fourth proportional to 6,892.90, 9,512.72 and 4,241.23
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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.