Home / 8,439.21-11,645.87-4,662.45

Finding the Fourth Proportional to 8,439.21, 11,645.87 and 4,662.45

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Solution

The fourth proportional to 8,439.21, 11,645.87 and 4,662.45 is: 6,434.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,439.21 : 11,645.87 = 4,662.45 : x
  2. Step 2: Convert to fraction form
    8,439.21/11,645.87 = 4,662.45/x
  3. Step 3: Cross multiply
    8,439.21x = 11,645.87 × 4,662.45
  4. Step 4: Simplify right side
    8,439.21x = 54,298,263.27
  5. Step 5: Solve for x
    x = 54,298,263.27/8,439.21
  6. Step 6: Final answer
    x = 6,434.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.