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Finding the Fourth Proportional to 3,581.96, 5,372.95 and 1,392.23

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Solution

The fourth proportional to 3,581.96, 5,372.95 and 1,392.23 is: 2,088.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,581.96 : 5,372.95 = 1,392.23 : x
  2. Step 2: Convert to fraction form
    3,581.96/5,372.95 = 1,392.23/x
  3. Step 3: Cross multiply
    3,581.96x = 5,372.95 × 1,392.23
  4. Step 4: Simplify right side
    3,581.96x = 7,480,392.13
  5. Step 5: Solve for x
    x = 7,480,392.13/3,581.96
  6. Step 6: Final answer
    x = 2,088.35

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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.