Home / 2,011.41-2,775.80-1,127.40

Finding the Fourth Proportional to 2,011.41, 2,775.80 and 1,127.40

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Solution

The fourth proportional to 2,011.41, 2,775.80 and 1,127.40 is: 1,555.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,011.41 : 2,775.80 = 1,127.40 : x
  2. Step 2: Convert to fraction form
    2,011.41/2,775.80 = 1,127.40/x
  3. Step 3: Cross multiply
    2,011.41x = 2,775.80 × 1,127.40
  4. Step 4: Simplify right side
    2,011.41x = 3,129,431.28
  5. Step 5: Solve for x
    x = 3,129,431.28/2,011.41
  6. Step 6: Final answer
    x = 1,555.84

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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.