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Finding the Fourth Proportional to 10,195.89, 15,290.90 and 2,800.59

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Solution

The fourth proportional to 10,195.89, 15,290.90 and 2,800.59 is: 4,200.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,195.89 : 15,290.90 = 2,800.59 : x
  2. Step 2: Convert to fraction form
    10,195.89/15,290.90 = 2,800.59/x
  3. Step 3: Cross multiply
    10,195.89x = 15,290.90 × 2,800.59
  4. Step 4: Simplify right side
    10,195.89x = 42,823,527.63
  5. Step 5: Solve for x
    x = 42,823,527.63/10,195.89
  6. Step 6: Final answer
    x = 4,200.08

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1.5x scale

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.