Home / 3,622.12-5,429.92-1,312

Finding the Fourth Proportional to 3,622.12, 5,429.92 and 1,312

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Solution

The fourth proportional to 3,622.12, 5,429.92 and 1,312 is: 1,966.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,622.12 : 5,429.92 = 1,312 : x
  2. Step 2: Convert to fraction form
    3,622.12/5,429.92 = 1,312/x
  3. Step 3: Cross multiply
    3,622.12x = 5,429.92 × 1,312
  4. Step 4: Simplify right side
    3,622.12x = 7,124,055.04
  5. Step 5: Solve for x
    x = 7,124,055.04/3,622.12
  6. Step 6: Final answer
    x = 1,966.82

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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.