Home / 3,113.55-4,297.28-1,788.12

Finding the Fourth Proportional to 3,113.55, 4,297.28 and 1,788.12

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Solution

The fourth proportional to 3,113.55, 4,297.28 and 1,788.12 is: 2,467.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,113.55 : 4,297.28 = 1,788.12 : x
  2. Step 2: Convert to fraction form
    3,113.55/4,297.28 = 1,788.12/x
  3. Step 3: Cross multiply
    3,113.55x = 4,297.28 × 1,788.12
  4. Step 4: Simplify right side
    3,113.55x = 7,684,043.37
  5. Step 5: Solve for x
    x = 7,684,043.37/3,113.55
  6. Step 6: Final answer
    x = 2,467.94

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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.