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Finding the Fourth Proportional to 5,870.21, 8,805.31 and 1,487.66

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Solution

The fourth proportional to 5,870.21, 8,805.31 and 1,487.66 is: 2,231.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,870.21 : 8,805.31 = 1,487.66 : x
  2. Step 2: Convert to fraction form
    5,870.21/8,805.31 = 1,487.66/x
  3. Step 3: Cross multiply
    5,870.21x = 8,805.31 × 1,487.66
  4. Step 4: Simplify right side
    5,870.21x = 13,099,259.73
  5. Step 5: Solve for x
    x = 13,099,259.73/5,870.21
  6. Step 6: Final answer
    x = 2,231.48

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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.