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Finding the Fourth Proportional to 3,239.19, 4,857.98 and 930.69

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Solution

The fourth proportional to 3,239.19, 4,857.98 and 930.69 is: 1,395.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,239.19 : 4,857.98 = 930.69 : x
  2. Step 2: Convert to fraction form
    3,239.19/4,857.98 = 930.69/x
  3. Step 3: Cross multiply
    3,239.19x = 4,857.98 × 930.69
  4. Step 4: Simplify right side
    3,239.19x = 4,521,268.75
  5. Step 5: Solve for x
    x = 4,521,268.75/3,239.19
  6. Step 6: Final answer
    x = 1,395.80

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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.