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Finding the Fourth Proportional to 4,999.40, 7,499.48 and 1,489.34

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Solution

The fourth proportional to 4,999.40, 7,499.48 and 1,489.34 is: 2,234.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,999.40 : 7,499.48 = 1,489.34 : x
  2. Step 2: Convert to fraction form
    4,999.40/7,499.48 = 1,489.34/x
  3. Step 3: Cross multiply
    4,999.40x = 7,499.48 × 1,489.34
  4. Step 4: Simplify right side
    4,999.40x = 11,169,298.02
  5. Step 5: Solve for x
    x = 11,169,298.02/4,999.40
  6. Step 6: Final answer
    x = 2,234.13

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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.