Home / 9,399.90-12,971.64-5,150.82

Finding the Fourth Proportional to 9,399.90, 12,971.64 and 5,150.82

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Solution

The fourth proportional to 9,399.90, 12,971.64 and 5,150.82 is: 7,108.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,399.90 : 12,971.64 = 5,150.82 : x
  2. Step 2: Convert to fraction form
    9,399.90/12,971.64 = 5,150.82/x
  3. Step 3: Cross multiply
    9,399.90x = 12,971.64 × 5,150.82
  4. Step 4: Simplify right side
    9,399.90x = 66,814,582.74
  5. Step 5: Solve for x
    x = 66,814,582.74/9,399.90
  6. Step 6: Final answer
    x = 7,108.01

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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.