Home / 8,419.10-12,615.75-4,247.48

Finding the Fourth Proportional to 8,419.10, 12,615.75 and 4,247.48

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Solution

The fourth proportional to 8,419.10, 12,615.75 and 4,247.48 is: 6,364.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,419.10 : 12,615.75 = 4,247.48 : x
  2. Step 2: Convert to fraction form
    8,419.10/12,615.75 = 4,247.48/x
  3. Step 3: Cross multiply
    8,419.10x = 12,615.75 × 4,247.48
  4. Step 4: Simplify right side
    8,419.10x = 53,585,145.81
  5. Step 5: Solve for x
    x = 53,585,145.81/8,419.10
  6. Step 6: Final answer
    x = 6,364.71

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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.