Home / 1,874.45-2,586.50-1,128.23

Finding the Fourth Proportional to 1,874.45, 2,586.50 and 1,128.23

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Solution

The fourth proportional to 1,874.45, 2,586.50 and 1,128.23 is: 1,556.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,874.45 : 2,586.50 = 1,128.23 : x
  2. Step 2: Convert to fraction form
    1,874.45/2,586.50 = 1,128.23/x
  3. Step 3: Cross multiply
    1,874.45x = 2,586.50 × 1,128.23
  4. Step 4: Simplify right side
    1,874.45x = 2,918,166.90
  5. Step 5: Solve for x
    x = 2,918,166.90/1,874.45
  6. Step 6: Final answer
    x = 1,556.82

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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.