Home / 9,018.40-13,529.88-3,175.60

Finding the Fourth Proportional to 9,018.40, 13,529.88 and 3,175.60

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Solution

The fourth proportional to 9,018.40, 13,529.88 and 3,175.60 is: 4,764.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,018.40 : 13,529.88 = 3,175.60 : x
  2. Step 2: Convert to fraction form
    9,018.40/13,529.88 = 3,175.60/x
  3. Step 3: Cross multiply
    9,018.40x = 13,529.88 × 3,175.60
  4. Step 4: Simplify right side
    9,018.40x = 42,965,486.93
  5. Step 5: Solve for x
    x = 42,965,486.93/9,018.40
  6. Step 6: Final answer
    x = 4,764.20

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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.