Home / 9,110.40-12,572.61-5,131.29

Finding the Fourth Proportional to 9,110.40, 12,572.61 and 5,131.29

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Solution

The fourth proportional to 9,110.40, 12,572.61 and 5,131.29 is: 7,081.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,110.40 : 12,572.61 = 5,131.29 : x
  2. Step 2: Convert to fraction form
    9,110.40/12,572.61 = 5,131.29/x
  3. Step 3: Cross multiply
    9,110.40x = 12,572.61 × 5,131.29
  4. Step 4: Simplify right side
    9,110.40x = 64,513,707.97
  5. Step 5: Solve for x
    x = 64,513,707.97/9,110.40
  6. Step 6: Final answer
    x = 7,081.33

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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.