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Finding the Fourth Proportional to 6,990.58, 9,646.99 and 4,006.27

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Solution

The fourth proportional to 6,990.58, 9,646.99 and 4,006.27 is: 5,528.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,990.58 : 9,646.99 = 4,006.27 : x
  2. Step 2: Convert to fraction form
    6,990.58/9,646.99 = 4,006.27/x
  3. Step 3: Cross multiply
    6,990.58x = 9,646.99 × 4,006.27
  4. Step 4: Simplify right side
    6,990.58x = 38,648,446.63
  5. Step 5: Solve for x
    x = 38,648,446.63/6,990.58
  6. Step 6: Final answer
    x = 5,528.65

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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.