Home / 2,011.83-2,776.21-1,127.49

Finding the Fourth Proportional to 2,011.83, 2,776.21 and 1,127.49

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Solution

The fourth proportional to 2,011.83, 2,776.21 and 1,127.49 is: 1,555.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,011.83 : 2,776.21 = 1,127.49 : x
  2. Step 2: Convert to fraction form
    2,011.83/2,776.21 = 1,127.49/x
  3. Step 3: Cross multiply
    2,011.83x = 2,776.21 × 1,127.49
  4. Step 4: Simplify right side
    2,011.83x = 3,130,149.01
  5. Step 5: Solve for x
    x = 3,130,149.01/2,011.83
  6. Step 6: Final answer
    x = 1,555.87

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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.