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Finding the Fourth Proportional to 2,836.76, 3,915.96 and 1,894.06

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Solution

The fourth proportional to 2,836.76, 3,915.96 and 1,894.06 is: 2,614.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,836.76 : 3,915.96 = 1,894.06 : x
  2. Step 2: Convert to fraction form
    2,836.76/3,915.96 = 1,894.06/x
  3. Step 3: Cross multiply
    2,836.76x = 3,915.96 × 1,894.06
  4. Step 4: Simplify right side
    2,836.76x = 7,417,063.20
  5. Step 5: Solve for x
    x = 7,417,063.20/2,836.76
  6. Step 6: Final answer
    x = 2,614.62

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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.