Home / 2,012.66-2,777.53-1,128.45

Finding the Fourth Proportional to 2,012.66, 2,777.53 and 1,128.45

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Solution

The fourth proportional to 2,012.66, 2,777.53 and 1,128.45 is: 1,557.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,012.66 : 2,777.53 = 1,128.45 : x
  2. Step 2: Convert to fraction form
    2,012.66/2,777.53 = 1,128.45/x
  3. Step 3: Cross multiply
    2,012.66x = 2,777.53 × 1,128.45
  4. Step 4: Simplify right side
    2,012.66x = 3,134,303.73
  5. Step 5: Solve for x
    x = 3,134,303.73/2,012.66
  6. Step 6: Final answer
    x = 1,557.29

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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.