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Finding the Fourth Proportional to 1,863.60, 2,795.88 and 1,316.88

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Solution

The fourth proportional to 1,863.60, 2,795.88 and 1,316.88 is: 1,975.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,863.60 : 2,795.88 = 1,316.88 : x
  2. Step 2: Convert to fraction form
    1,863.60/2,795.88 = 1,316.88/x
  3. Step 3: Cross multiply
    1,863.60x = 2,795.88 × 1,316.88
  4. Step 4: Simplify right side
    1,863.60x = 3,681,838.45
  5. Step 5: Solve for x
    x = 3,681,838.45/1,863.60
  6. Step 6: Final answer
    x = 1,975.66

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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.