Home / 8,390.45-12,585.68-2,150.47

Finding the Fourth Proportional to 8,390.45, 12,585.68 and 2,150.47

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Solution

The fourth proportional to 8,390.45, 12,585.68 and 2,150.47 is: 3,225.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,390.45 : 12,585.68 = 2,150.47 : x
  2. Step 2: Convert to fraction form
    8,390.45/12,585.68 = 2,150.47/x
  3. Step 3: Cross multiply
    8,390.45x = 12,585.68 × 2,150.47
  4. Step 4: Simplify right side
    8,390.45x = 27,065,069.52
  5. Step 5: Solve for x
    x = 27,065,069.52/8,390.45
  6. Step 6: Final answer
    x = 3,225.70

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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.