Home / 9,403.29-12,971.95-7,910.66

Finding the Fourth Proportional to 9,403.29, 12,971.95 and 7,910.66

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Solution

The fourth proportional to 9,403.29, 12,971.95 and 7,910.66 is: 10,912.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,403.29 : 12,971.95 = 7,910.66 : x
  2. Step 2: Convert to fraction form
    9,403.29/12,971.95 = 7,910.66/x
  3. Step 3: Cross multiply
    9,403.29x = 12,971.95 × 7,910.66
  4. Step 4: Simplify right side
    9,403.29x = 102,616,698.64
  5. Step 5: Solve for x
    x = 102,616,698.64/9,403.29
  6. Step 6: Final answer
    x = 10,912.85

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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.