Home / 8,320.92-12,485.97-6,475.74

Finding the Fourth Proportional to 8,320.92, 12,485.97 and 6,475.74

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Solution

The fourth proportional to 8,320.92, 12,485.97 and 6,475.74 is: 9,717.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,320.92 : 12,485.97 = 6,475.74 : x
  2. Step 2: Convert to fraction form
    8,320.92/12,485.97 = 6,475.74/x
  3. Step 3: Cross multiply
    8,320.92x = 12,485.97 × 6,475.74
  4. Step 4: Simplify right side
    8,320.92x = 80,855,895.37
  5. Step 5: Solve for x
    x = 80,855,895.37/8,320.92
  6. Step 6: Final answer
    x = 9,717.18

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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.