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Finding the Fourth Proportional to 2,029.10, 2,800.13 and 1,189.62

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Solution

The fourth proportional to 2,029.10, 2,800.13 and 1,189.62 is: 1,641.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,029.10 : 2,800.13 = 1,189.62 : x
  2. Step 2: Convert to fraction form
    2,029.10/2,800.13 = 1,189.62/x
  3. Step 3: Cross multiply
    2,029.10x = 2,800.13 × 1,189.62
  4. Step 4: Simplify right side
    2,029.10x = 3,331,099.66
  5. Step 5: Solve for x
    x = 3,331,099.66/2,029.10
  6. Step 6: Final answer
    x = 1,641.67

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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.