Home / 4,218.40-5,821.88-3,508.99

Finding the Fourth Proportional to 4,218.40, 5,821.88 and 3,508.99

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Solution

The fourth proportional to 4,218.40, 5,821.88 and 3,508.99 is: 4,842.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,218.40 : 5,821.88 = 3,508.99 : x
  2. Step 2: Convert to fraction form
    4,218.40/5,821.88 = 3,508.99/x
  3. Step 3: Cross multiply
    4,218.40x = 5,821.88 × 3,508.99
  4. Step 4: Simplify right side
    4,218.40x = 20,428,889.59
  5. Step 5: Solve for x
    x = 20,428,889.59/4,218.40
  6. Step 6: Final answer
    x = 4,842.81

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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.