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Finding the Fourth Proportional to 3,093.36, 4,639.92 and 784.92

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Solution

The fourth proportional to 3,093.36, 4,639.92 and 784.92 is: 1,177.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,093.36 : 4,639.92 = 784.92 : x
  2. Step 2: Convert to fraction form
    3,093.36/4,639.92 = 784.92/x
  3. Step 3: Cross multiply
    3,093.36x = 4,639.92 × 784.92
  4. Step 4: Simplify right side
    3,093.36x = 3,641,966.01
  5. Step 5: Solve for x
    x = 3,641,966.01/3,093.36
  6. Step 6: Final answer
    x = 1,177.35

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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.