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Finding the Fourth Proportional to 2,937.99, 4,407.44 and 990.04

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Solution

The fourth proportional to 2,937.99, 4,407.44 and 990.04 is: 1,485.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,937.99 : 4,407.44 = 990.04 : x
  2. Step 2: Convert to fraction form
    2,937.99/4,407.44 = 990.04/x
  3. Step 3: Cross multiply
    2,937.99x = 4,407.44 × 990.04
  4. Step 4: Simplify right side
    2,937.99x = 4,363,541.90
  5. Step 5: Solve for x
    x = 4,363,541.90/2,937.99
  6. Step 6: Final answer
    x = 1,485.21

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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.