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Finding the Fourth Proportional to 5,605.81, 8,409.11 and 1,657.02

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Solution

The fourth proportional to 5,605.81, 8,409.11 and 1,657.02 is: 2,485.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,605.81 : 8,409.11 = 1,657.02 : x
  2. Step 2: Convert to fraction form
    5,605.81/8,409.11 = 1,657.02/x
  3. Step 3: Cross multiply
    5,605.81x = 8,409.11 × 1,657.02
  4. Step 4: Simplify right side
    5,605.81x = 13,934,013.12
  5. Step 5: Solve for x
    x = 13,934,013.12/5,605.81
  6. Step 6: Final answer
    x = 2,485.64

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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.