Home / 9,379.36-12,943.37-5,130.33

Finding the Fourth Proportional to 9,379.36, 12,943.37 and 5,130.33

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Solution

The fourth proportional to 9,379.36, 12,943.37 and 5,130.33 is: 7,079.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,379.36 : 12,943.37 = 5,130.33 : x
  2. Step 2: Convert to fraction form
    9,379.36/12,943.37 = 5,130.33/x
  3. Step 3: Cross multiply
    9,379.36x = 12,943.37 × 5,130.33
  4. Step 4: Simplify right side
    9,379.36x = 66,403,759.41
  5. Step 5: Solve for x
    x = 66,403,759.41/9,379.36
  6. Step 6: Final answer
    x = 7,079.78

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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.