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Finding the Fourth Proportional to 5,340.84, 8,011.17 and 1,878

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Solution

The fourth proportional to 5,340.84, 8,011.17 and 1,878 is: 2,816.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,340.84 : 8,011.17 = 1,878 : x
  2. Step 2: Convert to fraction form
    5,340.84/8,011.17 = 1,878/x
  3. Step 3: Cross multiply
    5,340.84x = 8,011.17 × 1,878
  4. Step 4: Simplify right side
    5,340.84x = 15,044,977.26
  5. Step 5: Solve for x
    x = 15,044,977.26/5,340.84
  6. Step 6: Final answer
    x = 2,816.97

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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.