Home / 2,013.06-2,777.90-1,128.80

Finding the Fourth Proportional to 2,013.06, 2,777.90 and 1,128.80

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Solution

The fourth proportional to 2,013.06, 2,777.90 and 1,128.80 is: 1,557.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,013.06 : 2,777.90 = 1,128.80 : x
  2. Step 2: Convert to fraction form
    2,013.06/2,777.90 = 1,128.80/x
  3. Step 3: Cross multiply
    2,013.06x = 2,777.90 × 1,128.80
  4. Step 4: Simplify right side
    2,013.06x = 3,135,693.52
  5. Step 5: Solve for x
    x = 3,135,693.52/2,013.06
  6. Step 6: Final answer
    x = 1,557.68

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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.