Home / 3,926.49-5,417.87-2,881.05

Finding the Fourth Proportional to 3,926.49, 5,417.87 and 2,881.05

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Solution

The fourth proportional to 3,926.49, 5,417.87 and 2,881.05 is: 3,975.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,926.49 : 5,417.87 = 2,881.05 : x
  2. Step 2: Convert to fraction form
    3,926.49/5,417.87 = 2,881.05/x
  3. Step 3: Cross multiply
    3,926.49x = 5,417.87 × 2,881.05
  4. Step 4: Simplify right side
    3,926.49x = 15,609,139.96
  5. Step 5: Solve for x
    x = 15,609,139.96/3,926.49
  6. Step 6: Final answer
    x = 3,975.34

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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.