Home / 7,982.88-11,020.86-6,210.60

Finding the Fourth Proportional to 7,982.88, 11,020.86 and 6,210.60

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Solution

The fourth proportional to 7,982.88, 11,020.86 and 6,210.60 is: 8,574.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,982.88 : 11,020.86 = 6,210.60 : x
  2. Step 2: Convert to fraction form
    7,982.88/11,020.86 = 6,210.60/x
  3. Step 3: Cross multiply
    7,982.88x = 11,020.86 × 6,210.60
  4. Step 4: Simplify right side
    7,982.88x = 68,446,153.12
  5. Step 5: Solve for x
    x = 68,446,153.12/7,982.88
  6. Step 6: Final answer
    x = 8,574.12

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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.