Home / 2,130.59-2,940.32-1,199.09

Finding the Fourth Proportional to 2,130.59, 2,940.32 and 1,199.09

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Solution

The fourth proportional to 2,130.59, 2,940.32 and 1,199.09 is: 1,654.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,130.59 : 2,940.32 = 1,199.09 : x
  2. Step 2: Convert to fraction form
    2,130.59/2,940.32 = 1,199.09/x
  3. Step 3: Cross multiply
    2,130.59x = 2,940.32 × 1,199.09
  4. Step 4: Simplify right side
    2,130.59x = 3,525,708.31
  5. Step 5: Solve for x
    x = 3,525,708.31/2,130.59
  6. Step 6: Final answer
    x = 1,654.80

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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.