Home / 2,012.56-2,777.08-1,128.36

Finding the Fourth Proportional to 2,012.56, 2,777.08 and 1,128.36

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Solution

The fourth proportional to 2,012.56, 2,777.08 and 1,128.36 is: 1,557.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,012.56 : 2,777.08 = 1,128.36 : x
  2. Step 2: Convert to fraction form
    2,012.56/2,777.08 = 1,128.36/x
  3. Step 3: Cross multiply
    2,012.56x = 2,777.08 × 1,128.36
  4. Step 4: Simplify right side
    2,012.56x = 3,133,545.99
  5. Step 5: Solve for x
    x = 3,133,545.99/2,012.56
  6. Step 6: Final answer
    x = 1,557.00

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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.