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Finding the Fourth Proportional to 2,999.03, 4,498.68 and 918.89

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Solution

The fourth proportional to 2,999.03, 4,498.68 and 918.89 is: 1,378.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,999.03 : 4,498.68 = 918.89 : x
  2. Step 2: Convert to fraction form
    2,999.03/4,498.68 = 918.89/x
  3. Step 3: Cross multiply
    2,999.03x = 4,498.68 × 918.89
  4. Step 4: Simplify right side
    2,999.03x = 4,133,773.02
  5. Step 5: Solve for x
    x = 4,133,773.02/2,999.03
  6. Step 6: Final answer
    x = 1,378.37

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1.5x scale

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.