Home / 3,115.13-4,672.69-923.68

Finding the Fourth Proportional to 3,115.13, 4,672.69 and 923.68

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Solution

The fourth proportional to 3,115.13, 4,672.69 and 923.68 is: 1,385.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,115.13 : 4,672.69 = 923.68 : x
  2. Step 2: Convert to fraction form
    3,115.13/4,672.69 = 923.68/x
  3. Step 3: Cross multiply
    3,115.13x = 4,672.69 × 923.68
  4. Step 4: Simplify right side
    3,115.13x = 4,316,070.30
  5. Step 5: Solve for x
    x = 4,316,070.30/3,115.13
  6. Step 6: Final answer
    x = 1,385.52

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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.