Home / 9,357.80-12,898.26-6,628.78

Finding the Fourth Proportional to 9,357.80, 12,898.26 and 6,628.78

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Solution

The fourth proportional to 9,357.80, 12,898.26 and 6,628.78 is: 9,136.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,357.80 : 12,898.26 = 6,628.78 : x
  2. Step 2: Convert to fraction form
    9,357.80/12,898.26 = 6,628.78/x
  3. Step 3: Cross multiply
    9,357.80x = 12,898.26 × 6,628.78
  4. Step 4: Simplify right side
    9,357.80x = 85,499,727.92
  5. Step 5: Solve for x
    x = 85,499,727.92/9,357.80
  6. Step 6: Final answer
    x = 9,136.73

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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.