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Finding the Fourth Proportional to 3,899.34, 5,381.69 and 2,483.64

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Solution

The fourth proportional to 3,899.34, 5,381.69 and 2,483.64 is: 3,427.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,899.34 : 5,381.69 = 2,483.64 : x
  2. Step 2: Convert to fraction form
    3,899.34/5,381.69 = 2,483.64/x
  3. Step 3: Cross multiply
    3,899.34x = 5,381.69 × 2,483.64
  4. Step 4: Simplify right side
    3,899.34x = 13,366,159.85
  5. Step 5: Solve for x
    x = 13,366,159.85/3,899.34
  6. Step 6: Final answer
    x = 3,427.80

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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.