Home / 8,326.59-11,430.53-7,145.61

Finding the Fourth Proportional to 8,326.59, 11,430.53 and 7,145.61

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Solution

The fourth proportional to 8,326.59, 11,430.53 and 7,145.61 is: 9,809.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,326.59 : 11,430.53 = 7,145.61 : x
  2. Step 2: Convert to fraction form
    8,326.59/11,430.53 = 7,145.61/x
  3. Step 3: Cross multiply
    8,326.59x = 11,430.53 × 7,145.61
  4. Step 4: Simplify right side
    8,326.59x = 81,678,073.75
  5. Step 5: Solve for x
    x = 81,678,073.75/8,326.59
  6. Step 6: Final answer
    x = 9,809.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.