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Finding the Fourth Proportional to 3,340.82, 5,011.24 and 1,393

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Solution

The fourth proportional to 3,340.82, 5,011.24 and 1,393 is: 2,089.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,340.82 : 5,011.24 = 1,393 : x
  2. Step 2: Convert to fraction form
    3,340.82/5,011.24 = 1,393/x
  3. Step 3: Cross multiply
    3,340.82x = 5,011.24 × 1,393
  4. Step 4: Simplify right side
    3,340.82x = 6,980,657.32
  5. Step 5: Solve for x
    x = 6,980,657.32/3,340.82
  6. Step 6: Final answer
    x = 2,089.50

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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.