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Finding the Fourth Proportional to 1,709.50, 2,558.70 and 886.60

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Solution

The fourth proportional to 1,709.50, 2,558.70 and 886.60 is: 1,327.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,709.50 : 2,558.70 = 886.60 : x
  2. Step 2: Convert to fraction form
    1,709.50/2,558.70 = 886.60/x
  3. Step 3: Cross multiply
    1,709.50x = 2,558.70 × 886.60
  4. Step 4: Simplify right side
    1,709.50x = 2,268,543.42
  5. Step 5: Solve for x
    x = 2,268,543.42/1,709.50
  6. Step 6: Final answer
    x = 1,327.02

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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.