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Finding the Fourth Proportional to 2,990.68, 4,494.12 and 1,605.04

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Solution

The fourth proportional to 2,990.68, 4,494.12 and 1,605.04 is: 2,411.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,990.68 : 4,494.12 = 1,605.04 : x
  2. Step 2: Convert to fraction form
    2,990.68/4,494.12 = 1,605.04/x
  3. Step 3: Cross multiply
    2,990.68x = 4,494.12 × 1,605.04
  4. Step 4: Simplify right side
    2,990.68x = 7,213,242.36
  5. Step 5: Solve for x
    x = 7,213,242.36/2,990.68
  6. Step 6: Final answer
    x = 2,411.91

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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.