Home / 7,828.55-11,742.83-2,638.07

Finding the Fourth Proportional to 7,828.55, 11,742.83 and 2,638.07

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Solution

The fourth proportional to 7,828.55, 11,742.83 and 2,638.07 is: 3,957.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,828.55 : 11,742.83 = 2,638.07 : x
  2. Step 2: Convert to fraction form
    7,828.55/11,742.83 = 2,638.07/x
  3. Step 3: Cross multiply
    7,828.55x = 11,742.83 × 2,638.07
  4. Step 4: Simplify right side
    7,828.55x = 30,978,394.35
  5. Step 5: Solve for x
    x = 30,978,394.35/7,828.55
  6. Step 6: Final answer
    x = 3,957.11

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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.