Home / 2,835.80-4,253.70-1,299.80

Finding the Fourth Proportional to 2,835.80, 4,253.70 and 1,299.80

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Solution

The fourth proportional to 2,835.80, 4,253.70 and 1,299.80 is: 1,949.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,835.80 : 4,253.70 = 1,299.80 : x
  2. Step 2: Convert to fraction form
    2,835.80/4,253.70 = 1,299.80/x
  3. Step 3: Cross multiply
    2,835.80x = 4,253.70 × 1,299.80
  4. Step 4: Simplify right side
    2,835.80x = 5,528,959.26
  5. Step 5: Solve for x
    x = 5,528,959.26/2,835.80
  6. Step 6: Final answer
    x = 1,949.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.