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Finding the Fourth Proportional to 6,985.44, 9,642.17 and 4,474.31

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Solution

The fourth proportional to 6,985.44, 9,642.17 and 4,474.31 is: 6,176.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,985.44 : 9,642.17 = 4,474.31 : x
  2. Step 2: Convert to fraction form
    6,985.44/9,642.17 = 4,474.31/x
  3. Step 3: Cross multiply
    6,985.44x = 9,642.17 × 4,474.31
  4. Step 4: Simplify right side
    6,985.44x = 43,142,057.65
  5. Step 5: Solve for x
    x = 43,142,057.65/6,985.44
  6. Step 6: Final answer
    x = 6,176.00

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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.