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Finding the Fourth Proportional to 5,872.86, 8,809.60 and 1,490.35

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Solution

The fourth proportional to 5,872.86, 8,809.60 and 1,490.35 is: 2,235.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,872.86 : 8,809.60 = 1,490.35 : x
  2. Step 2: Convert to fraction form
    5,872.86/8,809.60 = 1,490.35/x
  3. Step 3: Cross multiply
    5,872.86x = 8,809.60 × 1,490.35
  4. Step 4: Simplify right side
    5,872.86x = 13,129,387.36
  5. Step 5: Solve for x
    x = 13,129,387.36/5,872.86
  6. Step 6: Final answer
    x = 2,235.60

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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.