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Finding the Fourth Proportional to 6,670.04, 9,980.42 and 5,489.06

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Solution

The fourth proportional to 6,670.04, 9,980.42 and 5,489.06 is: 8,213.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,670.04 : 9,980.42 = 5,489.06 : x
  2. Step 2: Convert to fraction form
    6,670.04/9,980.42 = 5,489.06/x
  3. Step 3: Cross multiply
    6,670.04x = 9,980.42 × 5,489.06
  4. Step 4: Simplify right side
    6,670.04x = 54,783,124.21
  5. Step 5: Solve for x
    x = 54,783,124.21/6,670.04
  6. Step 6: Final answer
    x = 8,213.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.