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Finding the Fourth Proportional to 3,321, 4,957.56 and 2,860.56

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Solution

The fourth proportional to 3,321, 4,957.56 and 2,860.56 is: 4,270.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,321 : 4,957.56 = 2,860.56 : x
  2. Step 2: Convert to fraction form
    3,321/4,957.56 = 2,860.56/x
  3. Step 3: Cross multiply
    3,321x = 4,957.56 × 2,860.56
  4. Step 4: Simplify right side
    3,321x = 14,181,397.83
  5. Step 5: Solve for x
    x = 14,181,397.83/3,321
  6. Step 6: Final answer
    x = 4,270.22

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1.5x scale

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.