Home / 9,990.88-14,989.44-3,417.04

Finding the Fourth Proportional to 9,990.88, 14,989.44 and 3,417.04

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Solution

The fourth proportional to 9,990.88, 14,989.44 and 3,417.04 is: 5,126.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,990.88 : 14,989.44 = 3,417.04 : x
  2. Step 2: Convert to fraction form
    9,990.88/14,989.44 = 3,417.04/x
  3. Step 3: Cross multiply
    9,990.88x = 14,989.44 × 3,417.04
  4. Step 4: Simplify right side
    9,990.88x = 51,219,516.06
  5. Step 5: Solve for x
    x = 51,219,516.06/9,990.88
  6. Step 6: Final answer
    x = 5,126.63

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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.