Home / 2,013.46-2,778.66-1,129.28

Finding the Fourth Proportional to 2,013.46, 2,778.66 and 1,129.28

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Solution

The fourth proportional to 2,013.46, 2,778.66 and 1,129.28 is: 1,558.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,013.46 : 2,778.66 = 1,129.28 : x
  2. Step 2: Convert to fraction form
    2,013.46/2,778.66 = 1,129.28/x
  3. Step 3: Cross multiply
    2,013.46x = 2,778.66 × 1,129.28
  4. Step 4: Simplify right side
    2,013.46x = 3,137,871.27
  5. Step 5: Solve for x
    x = 3,137,871.27/2,013.46
  6. Step 6: Final answer
    x = 1,558.45

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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.