Home / 6,988.16-9,640.80-4,469.60

Finding the Fourth Proportional to 6,988.16, 9,640.80 and 4,469.60

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Solution

The fourth proportional to 6,988.16, 9,640.80 and 4,469.60 is: 6,166.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,988.16 : 9,640.80 = 4,469.60 : x
  2. Step 2: Convert to fraction form
    6,988.16/9,640.80 = 4,469.60/x
  3. Step 3: Cross multiply
    6,988.16x = 9,640.80 × 4,469.60
  4. Step 4: Simplify right side
    6,988.16x = 43,090,519.68
  5. Step 5: Solve for x
    x = 43,090,519.68/6,988.16
  6. Step 6: Final answer
    x = 6,166.22

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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.