Home / 5,251.20-7,877.10-1,355.50

Finding the Fourth Proportional to 5,251.20, 7,877.10 and 1,355.50

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Solution

The fourth proportional to 5,251.20, 7,877.10 and 1,355.50 is: 2,033.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,251.20 : 7,877.10 = 1,355.50 : x
  2. Step 2: Convert to fraction form
    5,251.20/7,877.10 = 1,355.50/x
  3. Step 3: Cross multiply
    5,251.20x = 7,877.10 × 1,355.50
  4. Step 4: Simplify right side
    5,251.20x = 10,677,409.05
  5. Step 5: Solve for x
    x = 10,677,409.05/5,251.20
  6. Step 6: Final answer
    x = 2,033.33

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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.