Home / 8,419.09-12,617.38-6,461.68

Finding the Fourth Proportional to 8,419.09, 12,617.38 and 6,461.68

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Solution

The fourth proportional to 8,419.09, 12,617.38 and 6,461.68 is: 9,683.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,419.09 : 12,617.38 = 6,461.68 : x
  2. Step 2: Convert to fraction form
    8,419.09/12,617.38 = 6,461.68/x
  3. Step 3: Cross multiply
    8,419.09x = 12,617.38 × 6,461.68
  4. Step 4: Simplify right side
    8,419.09x = 81,529,472.00
  5. Step 5: Solve for x
    x = 81,529,472.00/8,419.09
  6. Step 6: Final answer
    x = 9,683.88

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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.