Home / 1,913.42-2,640.06-1,205.07

Finding the Fourth Proportional to 1,913.42, 2,640.06 and 1,205.07

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Solution

The fourth proportional to 1,913.42, 2,640.06 and 1,205.07 is: 1,662.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,913.42 : 2,640.06 = 1,205.07 : x
  2. Step 2: Convert to fraction form
    1,913.42/2,640.06 = 1,205.07/x
  3. Step 3: Cross multiply
    1,913.42x = 2,640.06 × 1,205.07
  4. Step 4: Simplify right side
    1,913.42x = 3,181,457.10
  5. Step 5: Solve for x
    x = 3,181,457.10/1,913.42
  6. Step 6: Final answer
    x = 1,662.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.