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Finding the Fourth Proportional to 2,815.92, 3,885.93 and 1,573.92

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Solution

The fourth proportional to 2,815.92, 3,885.93 and 1,573.92 is: 2,171.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,815.92 : 3,885.93 = 1,573.92 : x
  2. Step 2: Convert to fraction form
    2,815.92/3,885.93 = 1,573.92/x
  3. Step 3: Cross multiply
    2,815.92x = 3,885.93 × 1,573.92
  4. Step 4: Simplify right side
    2,815.92x = 6,116,142.95
  5. Step 5: Solve for x
    x = 6,116,142.95/2,815.92
  6. Step 6: Final answer
    x = 2,171.99

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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.