Home / 2,955.10-4,079.45-1,836.78

Finding the Fourth Proportional to 2,955.10, 4,079.45 and 1,836.78

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Solution

The fourth proportional to 2,955.10, 4,079.45 and 1,836.78 is: 2,535.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,955.10 : 4,079.45 = 1,836.78 : x
  2. Step 2: Convert to fraction form
    2,955.10/4,079.45 = 1,836.78/x
  3. Step 3: Cross multiply
    2,955.10x = 4,079.45 × 1,836.78
  4. Step 4: Simplify right side
    2,955.10x = 7,493,042.99
  5. Step 5: Solve for x
    x = 7,493,042.99/2,955.10
  6. Step 6: Final answer
    x = 2,535.64

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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.