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Finding the Fourth Proportional to 3,894.16, 5,373.72 and 2,125.72

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Solution

The fourth proportional to 3,894.16, 5,373.72 and 2,125.72 is: 2,933.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,894.16 : 5,373.72 = 2,125.72 : x
  2. Step 2: Convert to fraction form
    3,894.16/5,373.72 = 2,125.72/x
  3. Step 3: Cross multiply
    3,894.16x = 5,373.72 × 2,125.72
  4. Step 4: Simplify right side
    3,894.16x = 11,423,024.08
  5. Step 5: Solve for x
    x = 11,423,024.08/3,894.16
  6. Step 6: Final answer
    x = 2,933.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.