Home / 1,874.97-2,586.80-1,128.35

Finding the Fourth Proportional to 1,874.97, 2,586.80 and 1,128.35

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Solution

The fourth proportional to 1,874.97, 2,586.80 and 1,128.35 is: 1,556.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,874.97 : 2,586.80 = 1,128.35 : x
  2. Step 2: Convert to fraction form
    1,874.97/2,586.80 = 1,128.35/x
  3. Step 3: Cross multiply
    1,874.97x = 2,586.80 × 1,128.35
  4. Step 4: Simplify right side
    1,874.97x = 2,918,825.07
  5. Step 5: Solve for x
    x = 2,918,825.07/1,874.97
  6. Step 6: Final answer
    x = 1,556.73

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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.