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Finding the Fourth Proportional to 3,891.61, 5,807.30 and 3,476.28

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Solution

The fourth proportional to 3,891.61, 5,807.30 and 3,476.28 is: 5,187.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,891.61 : 5,807.30 = 3,476.28 : x
  2. Step 2: Convert to fraction form
    3,891.61/5,807.30 = 3,476.28/x
  3. Step 3: Cross multiply
    3,891.61x = 5,807.30 × 3,476.28
  4. Step 4: Simplify right side
    3,891.61x = 20,187,805.24
  5. Step 5: Solve for x
    x = 20,187,805.24/3,891.61
  6. Step 6: Final answer
    x = 5,187.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.