Home / 8,420.74-12,634.09-3,740.33

Finding the Fourth Proportional to 8,420.74, 12,634.09 and 3,740.33

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Solution

The fourth proportional to 8,420.74, 12,634.09 and 3,740.33 is: 5,611.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,420.74 : 12,634.09 = 3,740.33 : x
  2. Step 2: Convert to fraction form
    8,420.74/12,634.09 = 3,740.33/x
  3. Step 3: Cross multiply
    8,420.74x = 12,634.09 × 3,740.33
  4. Step 4: Simplify right side
    8,420.74x = 47,255,688.08
  5. Step 5: Solve for x
    x = 47,255,688.08/8,420.74
  6. Step 6: Final answer
    x = 5,611.82

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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.