Home / 8,190.90-11,300.16-5,165.02

Finding the Fourth Proportional to 8,190.90, 11,300.16 and 5,165.02

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Solution

The fourth proportional to 8,190.90, 11,300.16 and 5,165.02 is: 7,125.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,190.90 : 11,300.16 = 5,165.02 : x
  2. Step 2: Convert to fraction form
    8,190.90/11,300.16 = 5,165.02/x
  3. Step 3: Cross multiply
    8,190.90x = 11,300.16 × 5,165.02
  4. Step 4: Simplify right side
    8,190.90x = 58,365,552.40
  5. Step 5: Solve for x
    x = 58,365,552.40/8,190.90
  6. Step 6: Final answer
    x = 7,125.66

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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.