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Finding the Fourth Proportional to 3,681.72, 5,535 and 2,041.20

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Solution

The fourth proportional to 3,681.72, 5,535 and 2,041.20 is: 3,068.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,681.72 : 5,535 = 2,041.20 : x
  2. Step 2: Convert to fraction form
    3,681.72/5,535 = 2,041.20/x
  3. Step 3: Cross multiply
    3,681.72x = 5,535 × 2,041.20
  4. Step 4: Simplify right side
    3,681.72x = 11,298,042
  5. Step 5: Solve for x
    x = 11,298,042/3,681.72
  6. Step 6: Final answer
    x = 3,068.69

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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.