Home / 6,669.12-10,003.69-1,989.01

Finding the Fourth Proportional to 6,669.12, 10,003.69 and 1,989.01

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Solution

The fourth proportional to 6,669.12, 10,003.69 and 1,989.01 is: 2,983.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,669.12 : 10,003.69 = 1,989.01 : x
  2. Step 2: Convert to fraction form
    6,669.12/10,003.69 = 1,989.01/x
  3. Step 3: Cross multiply
    6,669.12x = 10,003.69 × 1,989.01
  4. Step 4: Simplify right side
    6,669.12x = 19,897,439.45
  5. Step 5: Solve for x
    x = 19,897,439.45/6,669.12
  6. Step 6: Final answer
    x = 2,983.52

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Similar ratio
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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.