Home / 9,135.75-12,607.35-5,409.75

Finding the Fourth Proportional to 9,135.75, 12,607.35 and 5,409.75

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Solution

The fourth proportional to 9,135.75, 12,607.35 and 5,409.75 is: 7,465.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,135.75 : 12,607.35 = 5,409.75 : x
  2. Step 2: Convert to fraction form
    9,135.75/12,607.35 = 5,409.75/x
  3. Step 3: Cross multiply
    9,135.75x = 12,607.35 × 5,409.75
  4. Step 4: Simplify right side
    9,135.75x = 68,202,611.66
  5. Step 5: Solve for x
    x = 68,202,611.66/9,135.75
  6. Step 6: Final answer
    x = 7,465.46

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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.