Home / 3,114.05-4,671.09-923.40

Finding the Fourth Proportional to 3,114.05, 4,671.09 and 923.40

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Solution

The fourth proportional to 3,114.05, 4,671.09 and 923.40 is: 1,385.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,114.05 : 4,671.09 = 923.40 : x
  2. Step 2: Convert to fraction form
    3,114.05/4,671.09 = 923.40/x
  3. Step 3: Cross multiply
    3,114.05x = 4,671.09 × 923.40
  4. Step 4: Simplify right side
    3,114.05x = 4,313,284.51
  5. Step 5: Solve for x
    x = 4,313,284.51/3,114.05
  6. Step 6: Final answer
    x = 1,385.11

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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.