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Finding the Fourth Proportional to 3,303.60, 4,955.40 and 838.41

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Solution

The fourth proportional to 3,303.60, 4,955.40 and 838.41 is: 1,257.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,303.60 : 4,955.40 = 838.41 : x
  2. Step 2: Convert to fraction form
    3,303.60/4,955.40 = 838.41/x
  3. Step 3: Cross multiply
    3,303.60x = 4,955.40 × 838.41
  4. Step 4: Simplify right side
    3,303.60x = 4,154,656.91
  5. Step 5: Solve for x
    x = 4,154,656.91/3,303.60
  6. Step 6: Final answer
    x = 1,257.62

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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.