Home / 2,011.77-2,776.06-1,127.45

Finding the Fourth Proportional to 2,011.77, 2,776.06 and 1,127.45

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Solution

The fourth proportional to 2,011.77, 2,776.06 and 1,127.45 is: 1,555.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,011.77 : 2,776.06 = 1,127.45 : x
  2. Step 2: Convert to fraction form
    2,011.77/2,776.06 = 1,127.45/x
  3. Step 3: Cross multiply
    2,011.77x = 2,776.06 × 1,127.45
  4. Step 4: Simplify right side
    2,011.77x = 3,129,868.85
  5. Step 5: Solve for x
    x = 3,129,868.85/2,011.77
  6. Step 6: Final answer
    x = 1,555.78

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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.