Home / 2,784.12-4,175.46-1,320.36

Finding the Fourth Proportional to 2,784.12, 4,175.46 and 1,320.36

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Solution

The fourth proportional to 2,784.12, 4,175.46 and 1,320.36 is: 1,980.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,784.12 : 4,175.46 = 1,320.36 : x
  2. Step 2: Convert to fraction form
    2,784.12/4,175.46 = 1,320.36/x
  3. Step 3: Cross multiply
    2,784.12x = 4,175.46 × 1,320.36
  4. Step 4: Simplify right side
    2,784.12x = 5,513,110.37
  5. Step 5: Solve for x
    x = 5,513,110.37/2,784.12
  6. Step 6: Final answer
    x = 1,980.20

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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.