Home / 7,165.55-9,887.91-4,021.13

Finding the Fourth Proportional to 7,165.55, 9,887.91 and 4,021.13

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Solution

The fourth proportional to 7,165.55, 9,887.91 and 4,021.13 is: 5,548.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,165.55 : 9,887.91 = 4,021.13 : x
  2. Step 2: Convert to fraction form
    7,165.55/9,887.91 = 4,021.13/x
  3. Step 3: Cross multiply
    7,165.55x = 9,887.91 × 4,021.13
  4. Step 4: Simplify right side
    7,165.55x = 39,760,522.10
  5. Step 5: Solve for x
    x = 39,760,522.10/7,165.55
  6. Step 6: Final answer
    x = 5,548.85

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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.