Home / 6,621.35-9,137.46-3,970.31

Finding the Fourth Proportional to 6,621.35, 9,137.46 and 3,970.31

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Solution

The fourth proportional to 6,621.35, 9,137.46 and 3,970.31 is: 5,479.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,621.35 : 9,137.46 = 3,970.31 : x
  2. Step 2: Convert to fraction form
    6,621.35/9,137.46 = 3,970.31/x
  3. Step 3: Cross multiply
    6,621.35x = 9,137.46 × 3,970.31
  4. Step 4: Simplify right side
    6,621.35x = 36,278,503.13
  5. Step 5: Solve for x
    x = 36,278,503.13/6,621.35
  6. Step 6: Final answer
    x = 5,479.02

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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.