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Finding the Fourth Proportional to 7,449.59, 10,278.59 and 4,219.46

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Solution

The fourth proportional to 7,449.59, 10,278.59 and 4,219.46 is: 5,821.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,449.59 : 10,278.59 = 4,219.46 : x
  2. Step 2: Convert to fraction form
    7,449.59/10,278.59 = 4,219.46/x
  3. Step 3: Cross multiply
    7,449.59x = 10,278.59 × 4,219.46
  4. Step 4: Simplify right side
    7,449.59x = 43,370,099.36
  5. Step 5: Solve for x
    x = 43,370,099.36/7,449.59
  6. Step 6: Final answer
    x = 5,821.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.