Home / 5,281.69-7,288.61-2,891.66

Finding the Fourth Proportional to 5,281.69, 7,288.61 and 2,891.66

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Solution

The fourth proportional to 5,281.69, 7,288.61 and 2,891.66 is: 3,990.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,281.69 : 7,288.61 = 2,891.66 : x
  2. Step 2: Convert to fraction form
    5,281.69/7,288.61 = 2,891.66/x
  3. Step 3: Cross multiply
    5,281.69x = 7,288.61 × 2,891.66
  4. Step 4: Simplify right side
    5,281.69x = 21,076,181.99
  5. Step 5: Solve for x
    x = 21,076,181.99/5,281.69
  6. Step 6: Final answer
    x = 3,990.42

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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.