Home / 6,670.80-9,205.60-3,686.56

Finding the Fourth Proportional to 6,670.80, 9,205.60 and 3,686.56

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Solution

The fourth proportional to 6,670.80, 9,205.60 and 3,686.56 is: 5,087.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,670.80 : 9,205.60 = 3,686.56 : x
  2. Step 2: Convert to fraction form
    6,670.80/9,205.60 = 3,686.56/x
  3. Step 3: Cross multiply
    6,670.80x = 9,205.60 × 3,686.56
  4. Step 4: Simplify right side
    6,670.80x = 33,936,996.74
  5. Step 5: Solve for x
    x = 33,936,996.74/6,670.80
  6. Step 6: Final answer
    x = 5,087.40

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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.