Home / 6,385.21-8,811.40-3,552.43

Finding the Fourth Proportional to 6,385.21, 8,811.40 and 3,552.43

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Solution

The fourth proportional to 6,385.21, 8,811.40 and 3,552.43 is: 4,902.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,385.21 : 8,811.40 = 3,552.43 : x
  2. Step 2: Convert to fraction form
    6,385.21/8,811.40 = 3,552.43/x
  3. Step 3: Cross multiply
    6,385.21x = 8,811.40 × 3,552.43
  4. Step 4: Simplify right side
    6,385.21x = 31,301,881.70
  5. Step 5: Solve for x
    x = 31,301,881.70/6,385.21
  6. Step 6: Final answer
    x = 4,902.25

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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.