Home / 6,480.78-9,670.60-5,782.64

Finding the Fourth Proportional to 6,480.78, 9,670.60 and 5,782.64

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Solution

The fourth proportional to 6,480.78, 9,670.60 and 5,782.64 is: 8,628.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,480.78 : 9,670.60 = 5,782.64 : x
  2. Step 2: Convert to fraction form
    6,480.78/9,670.60 = 5,782.64/x
  3. Step 3: Cross multiply
    6,480.78x = 9,670.60 × 5,782.64
  4. Step 4: Simplify right side
    6,480.78x = 55,921,598.38
  5. Step 5: Solve for x
    x = 55,921,598.38/6,480.78
  6. Step 6: Final answer
    x = 8,628.84

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.