Home / 8,439.93-12,650.24-5,145.71

Finding the Fourth Proportional to 8,439.93, 12,650.24 and 5,145.71

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Solution

The fourth proportional to 8,439.93, 12,650.24 and 5,145.71 is: 7,712.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,439.93 : 12,650.24 = 5,145.71 : x
  2. Step 2: Convert to fraction form
    8,439.93/12,650.24 = 5,145.71/x
  3. Step 3: Cross multiply
    8,439.93x = 12,650.24 × 5,145.71
  4. Step 4: Simplify right side
    8,439.93x = 65,094,416.08
  5. Step 5: Solve for x
    x = 65,094,416.08/8,439.93
  6. Step 6: Final answer
    x = 7,712.67

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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.