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Finding the Fourth Proportional to 3,572.34, 5,358.24 and 1,107.78

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Solution

The fourth proportional to 3,572.34, 5,358.24 and 1,107.78 is: 1,661.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,572.34 : 5,358.24 = 1,107.78 : x
  2. Step 2: Convert to fraction form
    3,572.34/5,358.24 = 1,107.78/x
  3. Step 3: Cross multiply
    3,572.34x = 5,358.24 × 1,107.78
  4. Step 4: Simplify right side
    3,572.34x = 5,935,751.11
  5. Step 5: Solve for x
    x = 5,935,751.11/3,572.34
  6. Step 6: Final answer
    x = 1,661.59

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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.