Home / 3,153.56-4,731.54-1,421.78

Finding the Fourth Proportional to 3,153.56, 4,731.54 and 1,421.78

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Solution

The fourth proportional to 3,153.56, 4,731.54 and 1,421.78 is: 2,133.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,153.56 : 4,731.54 = 1,421.78 : x
  2. Step 2: Convert to fraction form
    3,153.56/4,731.54 = 1,421.78/x
  3. Step 3: Cross multiply
    3,153.56x = 4,731.54 × 1,421.78
  4. Step 4: Simplify right side
    3,153.56x = 6,727,208.94
  5. Step 5: Solve for x
    x = 6,727,208.94/3,153.56
  6. Step 6: Final answer
    x = 2,133.21

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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.