Home / 2,011.45-2,775.93-1,127.39

Finding the Fourth Proportional to 2,011.45, 2,775.93 and 1,127.39

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Solution

The fourth proportional to 2,011.45, 2,775.93 and 1,127.39 is: 1,555.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,011.45 : 2,775.93 = 1,127.39 : x
  2. Step 2: Convert to fraction form
    2,011.45/2,775.93 = 1,127.39/x
  3. Step 3: Cross multiply
    2,011.45x = 2,775.93 × 1,127.39
  4. Step 4: Simplify right side
    2,011.45x = 3,129,555.72
  5. Step 5: Solve for x
    x = 3,129,555.72/2,011.45
  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.