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Finding the Fourth Proportional to 2,130.60, 3,195.90 and 570.60

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Solution

The fourth proportional to 2,130.60, 3,195.90 and 570.60 is: 855.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,130.60 : 3,195.90 = 570.60 : x
  2. Step 2: Convert to fraction form
    2,130.60/3,195.90 = 570.60/x
  3. Step 3: Cross multiply
    2,130.60x = 3,195.90 × 570.60
  4. Step 4: Simplify right side
    2,130.60x = 1,823,580.54
  5. Step 5: Solve for x
    x = 1,823,580.54/2,130.60
  6. Step 6: Final answer
    x = 855.90

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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.