Home / 2,011.92-2,776.20-1,127.58

Finding the Fourth Proportional to 2,011.92, 2,776.20 and 1,127.58

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Solution

The fourth proportional to 2,011.92, 2,776.20 and 1,127.58 is: 1,555.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,011.92 : 2,776.20 = 1,127.58 : x
  2. Step 2: Convert to fraction form
    2,011.92/2,776.20 = 1,127.58/x
  3. Step 3: Cross multiply
    2,011.92x = 2,776.20 × 1,127.58
  4. Step 4: Simplify right side
    2,011.92x = 3,130,387.60
  5. Step 5: Solve for x
    x = 3,130,387.60/2,011.92
  6. Step 6: Final answer
    x = 1,555.92

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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.