Home / 9,989.07-13,784.50-5,512.76

Finding the Fourth Proportional to 9,989.07, 13,784.50 and 5,512.76

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Solution

The fourth proportional to 9,989.07, 13,784.50 and 5,512.76 is: 7,607.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,989.07 : 13,784.50 = 5,512.76 : x
  2. Step 2: Convert to fraction form
    9,989.07/13,784.50 = 5,512.76/x
  3. Step 3: Cross multiply
    9,989.07x = 13,784.50 × 5,512.76
  4. Step 4: Simplify right side
    9,989.07x = 75,990,640.22
  5. Step 5: Solve for x
    x = 75,990,640.22/9,989.07
  6. Step 6: Final answer
    x = 7,607.38

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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.