Home / 7,988.07-11,022.81-4,451.20

Finding the Fourth Proportional to 7,988.07, 11,022.81 and 4,451.20

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Solution

The fourth proportional to 7,988.07, 11,022.81 and 4,451.20 is: 6,142.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,988.07 : 11,022.81 = 4,451.20 : x
  2. Step 2: Convert to fraction form
    7,988.07/11,022.81 = 4,451.20/x
  3. Step 3: Cross multiply
    7,988.07x = 11,022.81 × 4,451.20
  4. Step 4: Simplify right side
    7,988.07x = 49,064,731.87
  5. Step 5: Solve for x
    x = 49,064,731.87/7,988.07
  6. Step 6: Final answer
    x = 6,142.25

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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.