Home / 9,415.36-12,991.62-5,223.52

Finding the Fourth Proportional to 9,415.36, 12,991.62 and 5,223.52

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Solution

The fourth proportional to 9,415.36, 12,991.62 and 5,223.52 is: 7,207.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,415.36 : 12,991.62 = 5,223.52 : x
  2. Step 2: Convert to fraction form
    9,415.36/12,991.62 = 5,223.52/x
  3. Step 3: Cross multiply
    9,415.36x = 12,991.62 × 5,223.52
  4. Step 4: Simplify right side
    9,415.36x = 67,861,986.90
  5. Step 5: Solve for x
    x = 67,861,986.90/9,415.36
  6. Step 6: Final answer
    x = 7,207.58

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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.