Home / 1,369.15-2,043.63-1,259.35

Finding the Fourth Proportional to 1,369.15, 2,043.63 and 1,259.35

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Solution

The fourth proportional to 1,369.15, 2,043.63 and 1,259.35 is: 1,879.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,369.15 : 2,043.63 = 1,259.35 : x
  2. Step 2: Convert to fraction form
    1,369.15/2,043.63 = 1,259.35/x
  3. Step 3: Cross multiply
    1,369.15x = 2,043.63 × 1,259.35
  4. Step 4: Simplify right side
    1,369.15x = 2,573,640.33
  5. Step 5: Solve for x
    x = 2,573,640.33/1,369.15
  6. Step 6: Final answer
    x = 1,879.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.