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Finding the Fourth Proportional to 2,655.99, 3,983.78 and 924.62

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Solution

The fourth proportional to 2,655.99, 3,983.78 and 924.62 is: 1,386.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,655.99 : 3,983.78 = 924.62 : x
  2. Step 2: Convert to fraction form
    2,655.99/3,983.78 = 924.62/x
  3. Step 3: Cross multiply
    2,655.99x = 3,983.78 × 924.62
  4. Step 4: Simplify right side
    2,655.99x = 3,683,465.06
  5. Step 5: Solve for x
    x = 3,683,465.06/2,655.99
  6. Step 6: Final answer
    x = 1,386.85

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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.