Home / 7,955.28-11,928.72-2,688.48

Finding the Fourth Proportional to 7,955.28, 11,928.72 and 2,688.48

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Solution

The fourth proportional to 7,955.28, 11,928.72 and 2,688.48 is: 4,031.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,955.28 : 11,928.72 = 2,688.48 : x
  2. Step 2: Convert to fraction form
    7,955.28/11,928.72 = 2,688.48/x
  3. Step 3: Cross multiply
    7,955.28x = 11,928.72 × 2,688.48
  4. Step 4: Simplify right side
    7,955.28x = 32,070,125.15
  5. Step 5: Solve for x
    x = 32,070,125.15/7,955.28
  6. Step 6: Final answer
    x = 4,031.30

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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.