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Finding the Fourth Proportional to 2,130.86, 3,196.29 and 591.86

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Solution

The fourth proportional to 2,130.86, 3,196.29 and 591.86 is: 887.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,130.86 : 3,196.29 = 591.86 : x
  2. Step 2: Convert to fraction form
    2,130.86/3,196.29 = 591.86/x
  3. Step 3: Cross multiply
    2,130.86x = 3,196.29 × 591.86
  4. Step 4: Simplify right side
    2,130.86x = 1,891,756.20
  5. Step 5: Solve for x
    x = 1,891,756.20/2,130.86
  6. Step 6: Final answer
    x = 887.79

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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.