Home / 5,236.89-7,855.30-1,288.13

Finding the Fourth Proportional to 5,236.89, 7,855.30 and 1,288.13

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Solution

The fourth proportional to 5,236.89, 7,855.30 and 1,288.13 is: 1,932.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,236.89 : 7,855.30 = 1,288.13 : x
  2. Step 2: Convert to fraction form
    5,236.89/7,855.30 = 1,288.13/x
  3. Step 3: Cross multiply
    5,236.89x = 7,855.30 × 1,288.13
  4. Step 4: Simplify right side
    5,236.89x = 10,118,641.15
  5. Step 5: Solve for x
    x = 10,118,641.15/5,236.89
  6. Step 6: Final answer
    x = 1,932.19

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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.