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Finding the Fourth Proportional to 3,889.44, 5,368.08 and 2,318.08

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Solution

The fourth proportional to 3,889.44, 5,368.08 and 2,318.08 is: 3,199.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,889.44 : 5,368.08 = 2,318.08 : x
  2. Step 2: Convert to fraction form
    3,889.44/5,368.08 = 2,318.08/x
  3. Step 3: Cross multiply
    3,889.44x = 5,368.08 × 2,318.08
  4. Step 4: Simplify right side
    3,889.44x = 12,443,638.89
  5. Step 5: Solve for x
    x = 12,443,638.89/3,889.44
  6. Step 6: Final answer
    x = 3,199.34

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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.