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Finding the Fourth Proportional to 4,379.84, 6,565.84 and 1,605.86

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Solution

The fourth proportional to 4,379.84, 6,565.84 and 1,605.86 is: 2,407.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,379.84 : 6,565.84 = 1,605.86 : x
  2. Step 2: Convert to fraction form
    4,379.84/6,565.84 = 1,605.86/x
  3. Step 3: Cross multiply
    4,379.84x = 6,565.84 × 1,605.86
  4. Step 4: Simplify right side
    4,379.84x = 10,543,816.63
  5. Step 5: Solve for x
    x = 10,543,816.63/4,379.84
  6. Step 6: Final answer
    x = 2,407.35

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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.