Home / 7,616.88-10,515.40-5,351.60

Finding the Fourth Proportional to 7,616.88, 10,515.40 and 5,351.60

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Solution

The fourth proportional to 7,616.88, 10,515.40 and 5,351.60 is: 7,388.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,616.88 : 10,515.40 = 5,351.60 : x
  2. Step 2: Convert to fraction form
    7,616.88/10,515.40 = 5,351.60/x
  3. Step 3: Cross multiply
    7,616.88x = 10,515.40 × 5,351.60
  4. Step 4: Simplify right side
    7,616.88x = 56,274,214.64
  5. Step 5: Solve for x
    x = 56,274,214.64/7,616.88
  6. Step 6: Final answer
    x = 7,388.09

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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.