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Finding the Fourth Proportional to 2,858.55, 3,944.78 and 1,599.72

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Solution

The fourth proportional to 2,858.55, 3,944.78 and 1,599.72 is: 2,207.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,858.55 : 3,944.78 = 1,599.72 : x
  2. Step 2: Convert to fraction form
    2,858.55/3,944.78 = 1,599.72/x
  3. Step 3: Cross multiply
    2,858.55x = 3,944.78 × 1,599.72
  4. Step 4: Simplify right side
    2,858.55x = 6,310,543.46
  5. Step 5: Solve for x
    x = 6,310,543.46/2,858.55
  6. Step 6: Final answer
    x = 2,207.60

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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.