Home / 6,989.98-9,646.20-4,005.88

Finding the Fourth Proportional to 6,989.98, 9,646.20 and 4,005.88

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Solution

The fourth proportional to 6,989.98, 9,646.20 and 4,005.88 is: 5,528.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,989.98 : 9,646.20 = 4,005.88 : x
  2. Step 2: Convert to fraction form
    6,989.98/9,646.20 = 4,005.88/x
  3. Step 3: Cross multiply
    6,989.98x = 9,646.20 × 4,005.88
  4. Step 4: Simplify right side
    6,989.98x = 38,641,519.66
  5. Step 5: Solve for x
    x = 38,641,519.66/6,989.98
  6. Step 6: Final answer
    x = 5,528.13

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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.