Home / 9,138.21-13,696.24-3,871.18

Finding the Fourth Proportional to 9,138.21, 13,696.24 and 3,871.18

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Solution

The fourth proportional to 9,138.21, 13,696.24 and 3,871.18 is: 5,802.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,138.21 : 13,696.24 = 3,871.18 : x
  2. Step 2: Convert to fraction form
    9,138.21/13,696.24 = 3,871.18/x
  3. Step 3: Cross multiply
    9,138.21x = 13,696.24 × 3,871.18
  4. Step 4: Simplify right side
    9,138.21x = 53,020,610.36
  5. Step 5: Solve for x
    x = 53,020,610.36/9,138.21
  6. Step 6: Final answer
    x = 5,802.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.