Home / 8,621.81-12,932.72-2,465.81

Finding the Fourth Proportional to 8,621.81, 12,932.72 and 2,465.81

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Solution

The fourth proportional to 8,621.81, 12,932.72 and 2,465.81 is: 3,698.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,621.81 : 12,932.72 = 2,465.81 : x
  2. Step 2: Convert to fraction form
    8,621.81/12,932.72 = 2,465.81/x
  3. Step 3: Cross multiply
    8,621.81x = 12,932.72 × 2,465.81
  4. Step 4: Simplify right side
    8,621.81x = 31,889,659.55
  5. Step 5: Solve for x
    x = 31,889,659.55/8,621.81
  6. Step 6: Final answer
    x = 3,698.72

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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.