Home / 2,130.14-2,939.56-1,185.92

Finding the Fourth Proportional to 2,130.14, 2,939.56 and 1,185.92

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Solution

The fourth proportional to 2,130.14, 2,939.56 and 1,185.92 is: 1,636.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,130.14 : 2,939.56 = 1,185.92 : x
  2. Step 2: Convert to fraction form
    2,130.14/2,939.56 = 1,185.92/x
  3. Step 3: Cross multiply
    2,130.14x = 2,939.56 × 1,185.92
  4. Step 4: Simplify right side
    2,130.14x = 3,486,083.00
  5. Step 5: Solve for x
    x = 3,486,083.00/2,130.14
  6. Step 6: Final answer
    x = 1,636.55

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1.5x scale

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.