Home / 7,456.89-10,272.12-6,391.23

Finding the Fourth Proportional to 7,456.89, 10,272.12 and 6,391.23

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Solution

The fourth proportional to 7,456.89, 10,272.12 and 6,391.23 is: 8,804.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,456.89 : 10,272.12 = 6,391.23 : x
  2. Step 2: Convert to fraction form
    7,456.89/10,272.12 = 6,391.23/x
  3. Step 3: Cross multiply
    7,456.89x = 10,272.12 × 6,391.23
  4. Step 4: Simplify right side
    7,456.89x = 65,651,481.51
  5. Step 5: Solve for x
    x = 65,651,481.51/7,456.89
  6. Step 6: Final answer
    x = 8,804.14

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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.