Home / 9,988.45-13,783.91-5,512.19

Finding the Fourth Proportional to 9,988.45, 13,783.91 and 5,512.19

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Solution

The fourth proportional to 9,988.45, 13,783.91 and 5,512.19 is: 7,606.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,988.45 : 13,783.91 = 5,512.19 : x
  2. Step 2: Convert to fraction form
    9,988.45/13,783.91 = 5,512.19/x
  3. Step 3: Cross multiply
    9,988.45x = 13,783.91 × 5,512.19
  4. Step 4: Simplify right side
    9,988.45x = 75,979,434.38
  5. Step 5: Solve for x
    x = 75,979,434.38/9,988.45
  6. Step 6: Final answer
    x = 7,606.73

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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.