Home / 9,226.86-12,730.22-6,389.84

Finding the Fourth Proportional to 9,226.86, 12,730.22 and 6,389.84

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Solution

The fourth proportional to 9,226.86, 12,730.22 and 6,389.84 is: 8,816.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,226.86 : 12,730.22 = 6,389.84 : x
  2. Step 2: Convert to fraction form
    9,226.86/12,730.22 = 6,389.84/x
  3. Step 3: Cross multiply
    9,226.86x = 12,730.22 × 6,389.84
  4. Step 4: Simplify right side
    9,226.86x = 81,344,068.96
  5. Step 5: Solve for x
    x = 81,344,068.96/9,226.86
  6. Step 6: Final answer
    x = 8,816.01

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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.