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Finding the Fourth Proportional to 5,616.69, 8,426.02 and 1,918.05

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Solution

The fourth proportional to 5,616.69, 8,426.02 and 1,918.05 is: 2,877.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,616.69 : 8,426.02 = 1,918.05 : x
  2. Step 2: Convert to fraction form
    5,616.69/8,426.02 = 1,918.05/x
  3. Step 3: Cross multiply
    5,616.69x = 8,426.02 × 1,918.05
  4. Step 4: Simplify right side
    5,616.69x = 16,161,510.66
  5. Step 5: Solve for x
    x = 16,161,510.66/5,616.69
  6. Step 6: Final answer
    x = 2,877.41

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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.