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Finding the Fourth Proportional to 3,030.66, 4,545.90 and 1,081.50

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Solution

The fourth proportional to 3,030.66, 4,545.90 and 1,081.50 is: 1,622.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,030.66 : 4,545.90 = 1,081.50 : x
  2. Step 2: Convert to fraction form
    3,030.66/4,545.90 = 1,081.50/x
  3. Step 3: Cross multiply
    3,030.66x = 4,545.90 × 1,081.50
  4. Step 4: Simplify right side
    3,030.66x = 4,916,390.85
  5. Step 5: Solve for x
    x = 4,916,390.85/3,030.66
  6. Step 6: Final answer
    x = 1,622.22

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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.