Home / 9,687.20-13,366.64-5,709.12

Finding the Fourth Proportional to 9,687.20, 13,366.64 and 5,709.12

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Solution

The fourth proportional to 9,687.20, 13,366.64 and 5,709.12 is: 7,877.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,687.20 : 13,366.64 = 5,709.12 : x
  2. Step 2: Convert to fraction form
    9,687.20/13,366.64 = 5,709.12/x
  3. Step 3: Cross multiply
    9,687.20x = 13,366.64 × 5,709.12
  4. Step 4: Simplify right side
    9,687.20x = 76,311,751.76
  5. Step 5: Solve for x
    x = 76,311,751.76/9,687.20
  6. Step 6: Final answer
    x = 7,877.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.