Home / 7,836.80-11,749.68-7,098.72

Finding the Fourth Proportional to 7,836.80, 11,749.68 and 7,098.72

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Solution

The fourth proportional to 7,836.80, 11,749.68 and 7,098.72 is: 10,643.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,836.80 : 11,749.68 = 7,098.72 : x
  2. Step 2: Convert to fraction form
    7,836.80/11,749.68 = 7,098.72/x
  3. Step 3: Cross multiply
    7,836.80x = 11,749.68 × 7,098.72
  4. Step 4: Simplify right side
    7,836.80x = 83,407,688.41
  5. Step 5: Solve for x
    x = 83,407,688.41/7,836.80
  6. Step 6: Final answer
    x = 10,643.08

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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.