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Finding the Fourth Proportional to 2,392, 3,300.96 and 1,564

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Solution

The fourth proportional to 2,392, 3,300.96 and 1,564 is: 2,158.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,392 : 3,300.96 = 1,564 : x
  2. Step 2: Convert to fraction form
    2,392/3,300.96 = 1,564/x
  3. Step 3: Cross multiply
    2,392x = 3,300.96 × 1,564
  4. Step 4: Simplify right side
    2,392x = 5,162,701.44
  5. Step 5: Solve for x
    x = 5,162,701.44/2,392
  6. Step 6: Final answer
    x = 2,158.32

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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.