Home / 3,115.24-4,672.35-923.47

Finding the Fourth Proportional to 3,115.24, 4,672.35 and 923.47

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Solution

The fourth proportional to 3,115.24, 4,672.35 and 923.47 is: 1,385.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,115.24 : 4,672.35 = 923.47 : x
  2. Step 2: Convert to fraction form
    3,115.24/4,672.35 = 923.47/x
  3. Step 3: Cross multiply
    3,115.24x = 4,672.35 × 923.47
  4. Step 4: Simplify right side
    3,115.24x = 4,314,775.05
  5. Step 5: Solve for x
    x = 4,314,775.05/3,115.24
  6. Step 6: Final answer
    x = 1,385.05

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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.