Home / 8,438.20-12,637.59-6,671.34

Finding the Fourth Proportional to 8,438.20, 12,637.59 and 6,671.34

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Solution

The fourth proportional to 8,438.20, 12,637.59 and 6,671.34 is: 9,991.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,438.20 : 12,637.59 = 6,671.34 : x
  2. Step 2: Convert to fraction form
    8,438.20/12,637.59 = 6,671.34/x
  3. Step 3: Cross multiply
    8,438.20x = 12,637.59 × 6,671.34
  4. Step 4: Simplify right side
    8,438.20x = 84,309,655.40
  5. Step 5: Solve for x
    x = 84,309,655.40/8,438.20
  6. Step 6: Final answer
    x = 9,991.43

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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.