Home / 10,505.39-15,758.37-3,930.32

Finding the Fourth Proportional to 10,505.39, 15,758.37 and 3,930.32

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Solution

The fourth proportional to 10,505.39, 15,758.37 and 3,930.32 is: 5,895.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,505.39 : 15,758.37 = 3,930.32 : x
  2. Step 2: Convert to fraction form
    10,505.39/15,758.37 = 3,930.32/x
  3. Step 3: Cross multiply
    10,505.39x = 15,758.37 × 3,930.32
  4. Step 4: Simplify right side
    10,505.39x = 61,935,357.99
  5. Step 5: Solve for x
    x = 61,935,357.99/10,505.39
  6. Step 6: Final answer
    x = 5,895.58

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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.