Home / 8,400.83-11,587.19-7,279.79

Finding the Fourth Proportional to 8,400.83, 11,587.19 and 7,279.79

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Solution

The fourth proportional to 8,400.83, 11,587.19 and 7,279.79 is: 10,040.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,400.83 : 11,587.19 = 7,279.79 : x
  2. Step 2: Convert to fraction form
    8,400.83/11,587.19 = 7,279.79/x
  3. Step 3: Cross multiply
    8,400.83x = 11,587.19 × 7,279.79
  4. Step 4: Simplify right side
    8,400.83x = 84,352,215.56
  5. Step 5: Solve for x
    x = 84,352,215.56/8,400.83
  6. Step 6: Final answer
    x = 10,040.94

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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.