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Finding the Fourth Proportional to 6,670.23, 10,005.22 and 1,990.23

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Solution

The fourth proportional to 6,670.23, 10,005.22 and 1,990.23 is: 2,985.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,670.23 : 10,005.22 = 1,990.23 : x
  2. Step 2: Convert to fraction form
    6,670.23/10,005.22 = 1,990.23/x
  3. Step 3: Cross multiply
    6,670.23x = 10,005.22 × 1,990.23
  4. Step 4: Simplify right side
    6,670.23x = 19,912,689.00
  5. Step 5: Solve for x
    x = 19,912,689.00/6,670.23
  6. Step 6: Final answer
    x = 2,985.31

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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.