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Finding the Fourth Proportional to 7,320.66, 10,981.44 and 2,390.82

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Solution

The fourth proportional to 7,320.66, 10,981.44 and 2,390.82 is: 3,586.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,320.66 : 10,981.44 = 2,390.82 : x
  2. Step 2: Convert to fraction form
    7,320.66/10,981.44 = 2,390.82/x
  3. Step 3: Cross multiply
    7,320.66x = 10,981.44 × 2,390.82
  4. Step 4: Simplify right side
    7,320.66x = 26,254,646.38
  5. Step 5: Solve for x
    x = 26,254,646.38/7,320.66
  6. Step 6: Final answer
    x = 3,586.38

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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.