Home / 2,915.39-4,368.49-1,818.11

Finding the Fourth Proportional to 2,915.39, 4,368.49 and 1,818.11

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Solution

The fourth proportional to 2,915.39, 4,368.49 and 1,818.11 is: 2,724.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,915.39 : 4,368.49 = 1,818.11 : x
  2. Step 2: Convert to fraction form
    2,915.39/4,368.49 = 1,818.11/x
  3. Step 3: Cross multiply
    2,915.39x = 4,368.49 × 1,818.11
  4. Step 4: Simplify right side
    2,915.39x = 7,942,401.73
  5. Step 5: Solve for x
    x = 7,942,401.73/2,915.39
  6. Step 6: Final answer
    x = 2,724.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.