Home / 9,185.40-12,679.13-5,409.18

Finding the Fourth Proportional to 9,185.40, 12,679.13 and 5,409.18

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Solution

The fourth proportional to 9,185.40, 12,679.13 and 5,409.18 is: 7,466.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,185.40 : 12,679.13 = 5,409.18 : x
  2. Step 2: Convert to fraction form
    9,185.40/12,679.13 = 5,409.18/x
  3. Step 3: Cross multiply
    9,185.40x = 12,679.13 × 5,409.18
  4. Step 4: Simplify right side
    9,185.40x = 68,583,709.94
  5. Step 5: Solve for x
    x = 68,583,709.94/9,185.40
  6. Step 6: Final answer
    x = 7,466.60

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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.