Home / 2,130.22-2,939.53-1,185.94

Finding the Fourth Proportional to 2,130.22, 2,939.53 and 1,185.94

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Solution

The fourth proportional to 2,130.22, 2,939.53 and 1,185.94 is: 1,636.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,130.22 : 2,939.53 = 1,185.94 : x
  2. Step 2: Convert to fraction form
    2,130.22/2,939.53 = 1,185.94/x
  3. Step 3: Cross multiply
    2,130.22x = 2,939.53 × 1,185.94
  4. Step 4: Simplify right side
    2,130.22x = 3,486,106.21
  5. Step 5: Solve for x
    x = 3,486,106.21/2,130.22
  6. Step 6: Final answer
    x = 1,636.50

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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.