Home / 6,891.47-9,511.79-4,203.60

Finding the Fourth Proportional to 6,891.47, 9,511.79 and 4,203.60

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Solution

The fourth proportional to 6,891.47, 9,511.79 and 4,203.60 is: 5,801.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,891.47 : 9,511.79 = 4,203.60 : x
  2. Step 2: Convert to fraction form
    6,891.47/9,511.79 = 4,203.60/x
  3. Step 3: Cross multiply
    6,891.47x = 9,511.79 × 4,203.60
  4. Step 4: Simplify right side
    6,891.47x = 39,983,770.95
  5. Step 5: Solve for x
    x = 39,983,770.95/6,891.47
  6. Step 6: Final answer
    x = 5,801.92

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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.