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Finding the Fourth Proportional to 7,031.66, 10,545.94 and 2,100.66

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Solution

The fourth proportional to 7,031.66, 10,545.94 and 2,100.66 is: 3,150.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,031.66 : 10,545.94 = 2,100.66 : x
  2. Step 2: Convert to fraction form
    7,031.66/10,545.94 = 2,100.66/x
  3. Step 3: Cross multiply
    7,031.66x = 10,545.94 × 2,100.66
  4. Step 4: Simplify right side
    7,031.66x = 22,153,434.32
  5. Step 5: Solve for x
    x = 22,153,434.32/7,031.66
  6. Step 6: Final answer
    x = 3,150.53

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.