Home / 8,390.85-12,586.06-2,150.74

Finding the Fourth Proportional to 8,390.85, 12,586.06 and 2,150.74

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Solution

The fourth proportional to 8,390.85, 12,586.06 and 2,150.74 is: 3,226.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,390.85 : 12,586.06 = 2,150.74 : x
  2. Step 2: Convert to fraction form
    8,390.85/12,586.06 = 2,150.74/x
  3. Step 3: Cross multiply
    8,390.85x = 12,586.06 × 2,150.74
  4. Step 4: Simplify right side
    8,390.85x = 27,069,342.68
  5. Step 5: Solve for x
    x = 27,069,342.68/8,390.85
  6. Step 6: Final answer
    x = 3,226.05

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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.