Home / 7,518.36-11,278.74-2,586.78

Finding the Fourth Proportional to 7,518.36, 11,278.74 and 2,586.78

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Solution

The fourth proportional to 7,518.36, 11,278.74 and 2,586.78 is: 3,880.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,518.36 : 11,278.74 = 2,586.78 : x
  2. Step 2: Convert to fraction form
    7,518.36/11,278.74 = 2,586.78/x
  3. Step 3: Cross multiply
    7,518.36x = 11,278.74 × 2,586.78
  4. Step 4: Simplify right side
    7,518.36x = 29,175,619.06
  5. Step 5: Solve for x
    x = 29,175,619.06/7,518.36
  6. Step 6: Final answer
    x = 3,880.58

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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.