Home / 3,140.10-4,711.64-2,100.60

Finding the Fourth Proportional to 3,140.10, 4,711.64 and 2,100.60

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Solution

The fourth proportional to 3,140.10, 4,711.64 and 2,100.60 is: 3,151.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,140.10 : 4,711.64 = 2,100.60 : x
  2. Step 2: Convert to fraction form
    3,140.10/4,711.64 = 2,100.60/x
  3. Step 3: Cross multiply
    3,140.10x = 4,711.64 × 2,100.60
  4. Step 4: Simplify right side
    3,140.10x = 9,897,260.48
  5. Step 5: Solve for x
    x = 9,897,260.48/3,140.10
  6. Step 6: Final answer
    x = 3,151.89

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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.