Home / 9,085.39-12,539.27-5,310.79

Finding the Fourth Proportional to 9,085.39, 12,539.27 and 5,310.79

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Solution

The fourth proportional to 9,085.39, 12,539.27 and 5,310.79 is: 7,329.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,085.39 : 12,539.27 = 5,310.79 : x
  2. Step 2: Convert to fraction form
    9,085.39/12,539.27 = 5,310.79/x
  3. Step 3: Cross multiply
    9,085.39x = 12,539.27 × 5,310.79
  4. Step 4: Simplify right side
    9,085.39x = 66,593,411.65
  5. Step 5: Solve for x
    x = 66,593,411.65/9,085.39
  6. Step 6: Final answer
    x = 7,329.73

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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.