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Finding the Fourth Proportional to 3,959.68, 5,913.68 and 3,368.38

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Solution

The fourth proportional to 3,959.68, 5,913.68 and 3,368.38 is: 5,030.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,959.68 : 5,913.68 = 3,368.38 : x
  2. Step 2: Convert to fraction form
    3,959.68/5,913.68 = 3,368.38/x
  3. Step 3: Cross multiply
    3,959.68x = 5,913.68 × 3,368.38
  4. Step 4: Simplify right side
    3,959.68x = 19,919,504.60
  5. Step 5: Solve for x
    x = 19,919,504.60/3,959.68
  6. Step 6: Final answer
    x = 5,030.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.