Home / 3,998.48-5,518.08-2,672.72

Finding the Fourth Proportional to 3,998.48, 5,518.08 and 2,672.72

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Solution

The fourth proportional to 3,998.48, 5,518.08 and 2,672.72 is: 3,688.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,998.48 : 5,518.08 = 2,672.72 : x
  2. Step 2: Convert to fraction form
    3,998.48/5,518.08 = 2,672.72/x
  3. Step 3: Cross multiply
    3,998.48x = 5,518.08 × 2,672.72
  4. Step 4: Simplify right side
    3,998.48x = 14,748,282.78
  5. Step 5: Solve for x
    x = 14,748,282.78/3,998.48
  6. Step 6: Final answer
    x = 3,688.47

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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.