Home / 3,312.80-4,936.72-3,021.20

Finding the Fourth Proportional to 3,312.80, 4,936.72 and 3,021.20

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Solution

The fourth proportional to 3,312.80, 4,936.72 and 3,021.20 is: 4,502.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,312.80 : 4,936.72 = 3,021.20 : x
  2. Step 2: Convert to fraction form
    3,312.80/4,936.72 = 3,021.20/x
  3. Step 3: Cross multiply
    3,312.80x = 4,936.72 × 3,021.20
  4. Step 4: Simplify right side
    3,312.80x = 14,914,818.46
  5. Step 5: Solve for x
    x = 14,914,818.46/3,312.80
  6. Step 6: Final answer
    x = 4,502.18

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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.