Home / 2,908.80-4,013.76-1,729.44

Finding the Fourth Proportional to 2,908.80, 4,013.76 and 1,729.44

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Solution

The fourth proportional to 2,908.80, 4,013.76 and 1,729.44 is: 2,386.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,908.80 : 4,013.76 = 1,729.44 : x
  2. Step 2: Convert to fraction form
    2,908.80/4,013.76 = 1,729.44/x
  3. Step 3: Cross multiply
    2,908.80x = 4,013.76 × 1,729.44
  4. Step 4: Simplify right side
    2,908.80x = 6,941,557.09
  5. Step 5: Solve for x
    x = 6,941,557.09/2,908.80
  6. Step 6: Final answer
    x = 2,386.40

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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.