Home / 2,011.68-2,775.81-1,127.28

Finding the Fourth Proportional to 2,011.68, 2,775.81 and 1,127.28

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Solution

The fourth proportional to 2,011.68, 2,775.81 and 1,127.28 is: 1,555.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,011.68 : 2,775.81 = 1,127.28 : x
  2. Step 2: Convert to fraction form
    2,011.68/2,775.81 = 1,127.28/x
  3. Step 3: Cross multiply
    2,011.68x = 2,775.81 × 1,127.28
  4. Step 4: Simplify right side
    2,011.68x = 3,129,115.10
  5. Step 5: Solve for x
    x = 3,129,115.10/2,011.68
  6. Step 6: Final answer
    x = 1,555.47

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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.