Home / 8,621.52-12,904.20-5,662.56

Finding the Fourth Proportional to 8,621.52, 12,904.20 and 5,662.56

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Solution

The fourth proportional to 8,621.52, 12,904.20 and 5,662.56 is: 8,475.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,621.52 : 12,904.20 = 5,662.56 : x
  2. Step 2: Convert to fraction form
    8,621.52/12,904.20 = 5,662.56/x
  3. Step 3: Cross multiply
    8,621.52x = 12,904.20 × 5,662.56
  4. Step 4: Simplify right side
    8,621.52x = 73,070,806.75
  5. Step 5: Solve for x
    x = 73,070,806.75/8,621.52
  6. Step 6: Final answer
    x = 8,475.40

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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.