Home / 10,505.20-15,758.60-3,109.48

Finding the Fourth Proportional to 10,505.20, 15,758.60 and 3,109.48

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Solution

The fourth proportional to 10,505.20, 15,758.60 and 3,109.48 is: 4,664.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,505.20 : 15,758.60 = 3,109.48 : x
  2. Step 2: Convert to fraction form
    10,505.20/15,758.60 = 3,109.48/x
  3. Step 3: Cross multiply
    10,505.20x = 15,758.60 × 3,109.48
  4. Step 4: Simplify right side
    10,505.20x = 49,001,051.53
  5. Step 5: Solve for x
    x = 49,001,051.53/10,505.20
  6. Step 6: Final answer
    x = 4,664.46

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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.