Home / 2,013.55-2,778.67-1,129.33

Finding the Fourth Proportional to 2,013.55, 2,778.67 and 1,129.33

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Solution

The fourth proportional to 2,013.55, 2,778.67 and 1,129.33 is: 1,558.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,013.55 : 2,778.67 = 1,129.33 : x
  2. Step 2: Convert to fraction form
    2,013.55/2,778.67 = 1,129.33/x
  3. Step 3: Cross multiply
    2,013.55x = 2,778.67 × 1,129.33
  4. Step 4: Simplify right side
    2,013.55x = 3,138,029.74
  5. Step 5: Solve for x
    x = 3,138,029.74/2,013.55
  6. Step 6: Final answer
    x = 1,558.46

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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.