Home / 9,419.09-12,999.49-5,440.19

Finding the Fourth Proportional to 9,419.09, 12,999.49 and 5,440.19

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Solution

The fourth proportional to 9,419.09, 12,999.49 and 5,440.19 is: 7,508.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,419.09 : 12,999.49 = 5,440.19 : x
  2. Step 2: Convert to fraction form
    9,419.09/12,999.49 = 5,440.19/x
  3. Step 3: Cross multiply
    9,419.09x = 12,999.49 × 5,440.19
  4. Step 4: Simplify right side
    9,419.09x = 70,719,695.50
  5. Step 5: Solve for x
    x = 70,719,695.50/9,419.09
  6. Step 6: Final answer
    x = 7,508.12

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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.