Home / 2,100.08-2,897.25-1,260.80

Finding the Fourth Proportional to 2,100.08, 2,897.25 and 1,260.80

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Solution

The fourth proportional to 2,100.08, 2,897.25 and 1,260.80 is: 1,739.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,100.08 : 2,897.25 = 1,260.80 : x
  2. Step 2: Convert to fraction form
    2,100.08/2,897.25 = 1,260.80/x
  3. Step 3: Cross multiply
    2,100.08x = 2,897.25 × 1,260.80
  4. Step 4: Simplify right side
    2,100.08x = 3,652,852.80
  5. Step 5: Solve for x
    x = 3,652,852.80/2,100.08
  6. Step 6: Final answer
    x = 1,739.39

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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.