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Finding the Fourth Proportional to 4,809.94, 6,642.21 and 3,539.86

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Solution

The fourth proportional to 4,809.94, 6,642.21 and 3,539.86 is: 4,888.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,809.94 : 6,642.21 = 3,539.86 : x
  2. Step 2: Convert to fraction form
    4,809.94/6,642.21 = 3,539.86/x
  3. Step 3: Cross multiply
    4,809.94x = 6,642.21 × 3,539.86
  4. Step 4: Simplify right side
    4,809.94x = 23,512,493.49
  5. Step 5: Solve for x
    x = 23,512,493.49/4,809.94
  6. Step 6: Final answer
    x = 4,888.31

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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.