Home / 7,832.16-11,750.40-2,638.80

Finding the Fourth Proportional to 7,832.16, 11,750.40 and 2,638.80

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Solution

The fourth proportional to 7,832.16, 11,750.40 and 2,638.80 is: 3,958.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,832.16 : 11,750.40 = 2,638.80 : x
  2. Step 2: Convert to fraction form
    7,832.16/11,750.40 = 2,638.80/x
  3. Step 3: Cross multiply
    7,832.16x = 11,750.40 × 2,638.80
  4. Step 4: Simplify right side
    7,832.16x = 31,006,955.52
  5. Step 5: Solve for x
    x = 31,006,955.52/7,832.16
  6. Step 6: Final answer
    x = 3,958.93

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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.