Home / 8,047.49-11,081.21-7,138.26

Finding the Fourth Proportional to 8,047.49, 11,081.21 and 7,138.26

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Solution

The fourth proportional to 8,047.49, 11,081.21 and 7,138.26 is: 9,829.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,047.49 : 11,081.21 = 7,138.26 : x
  2. Step 2: Convert to fraction form
    8,047.49/11,081.21 = 7,138.26/x
  3. Step 3: Cross multiply
    8,047.49x = 11,081.21 × 7,138.26
  4. Step 4: Simplify right side
    8,047.49x = 79,100,522.40
  5. Step 5: Solve for x
    x = 79,100,522.40/8,047.49
  6. Step 6: Final answer
    x = 9,829.22

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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.