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Finding the Fourth Proportional to 6,261.99, 8,648 and 5,418.64

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Solution

The fourth proportional to 6,261.99, 8,648 and 5,418.64 is: 7,483.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,261.99 : 8,648 = 5,418.64 : x
  2. Step 2: Convert to fraction form
    6,261.99/8,648 = 5,418.64/x
  3. Step 3: Cross multiply
    6,261.99x = 8,648 × 5,418.64
  4. Step 4: Simplify right side
    6,261.99x = 46,860,398.72
  5. Step 5: Solve for x
    x = 46,860,398.72/6,261.99
  6. Step 6: Final answer
    x = 7,483.31

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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.