Home / 9,315.52-12,855.70-5,337.88

Finding the Fourth Proportional to 9,315.52, 12,855.70 and 5,337.88

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Solution

The fourth proportional to 9,315.52, 12,855.70 and 5,337.88 is: 7,366.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,315.52 : 12,855.70 = 5,337.88 : x
  2. Step 2: Convert to fraction form
    9,315.52/12,855.70 = 5,337.88/x
  3. Step 3: Cross multiply
    9,315.52x = 12,855.70 × 5,337.88
  4. Step 4: Simplify right side
    9,315.52x = 68,622,183.92
  5. Step 5: Solve for x
    x = 68,622,183.92/9,315.52
  6. Step 6: Final answer
    x = 7,366.44

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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.