Home / 2,011.32-2,775.76-1,127.21

Finding the Fourth Proportional to 2,011.32, 2,775.76 and 1,127.21

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Solution

The fourth proportional to 2,011.32, 2,775.76 and 1,127.21 is: 1,555.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,011.32 : 2,775.76 = 1,127.21 : x
  2. Step 2: Convert to fraction form
    2,011.32/2,775.76 = 1,127.21/x
  3. Step 3: Cross multiply
    2,011.32x = 2,775.76 × 1,127.21
  4. Step 4: Simplify right side
    2,011.32x = 3,128,847.73
  5. Step 5: Solve for x
    x = 3,128,847.73/2,011.32
  6. Step 6: Final answer
    x = 1,555.62

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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.