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Finding the Fourth Proportional to 3,580.61, 5,368.75 and 1,605.88

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Solution

The fourth proportional to 3,580.61, 5,368.75 and 1,605.88 is: 2,407.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,580.61 : 5,368.75 = 1,605.88 : x
  2. Step 2: Convert to fraction form
    3,580.61/5,368.75 = 1,605.88/x
  3. Step 3: Cross multiply
    3,580.61x = 5,368.75 × 1,605.88
  4. Step 4: Simplify right side
    3,580.61x = 8,621,533.38
  5. Step 5: Solve for x
    x = 8,621,533.38/3,580.61
  6. Step 6: Final answer
    x = 2,407.84

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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.