Home / 2,130.66-2,940.36-1,186.51

Finding the Fourth Proportional to 2,130.66, 2,940.36 and 1,186.51

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Solution

The fourth proportional to 2,130.66, 2,940.36 and 1,186.51 is: 1,637.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,130.66 : 2,940.36 = 1,186.51 : x
  2. Step 2: Convert to fraction form
    2,130.66/2,940.36 = 1,186.51/x
  3. Step 3: Cross multiply
    2,130.66x = 2,940.36 × 1,186.51
  4. Step 4: Simplify right side
    2,130.66x = 3,488,766.54
  5. Step 5: Solve for x
    x = 3,488,766.54/2,130.66
  6. Step 6: Final answer
    x = 1,637.41

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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.