Home / 7,880.64-11,788.08-5,540.48

Finding the Fourth Proportional to 7,880.64, 11,788.08 and 5,540.48

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Solution

The fourth proportional to 7,880.64, 11,788.08 and 5,540.48 is: 8,287.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,880.64 : 11,788.08 = 5,540.48 : x
  2. Step 2: Convert to fraction form
    7,880.64/11,788.08 = 5,540.48/x
  3. Step 3: Cross multiply
    7,880.64x = 11,788.08 × 5,540.48
  4. Step 4: Simplify right side
    7,880.64x = 65,311,621.48
  5. Step 5: Solve for x
    x = 65,311,621.48/7,880.64
  6. Step 6: Final answer
    x = 8,287.60

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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.