Home / 2,011.29-2,775.67-1,115.11

Finding the Fourth Proportional to 2,011.29, 2,775.67 and 1,115.11

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Solution

The fourth proportional to 2,011.29, 2,775.67 and 1,115.11 is: 1,538.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,011.29 : 2,775.67 = 1,115.11 : x
  2. Step 2: Convert to fraction form
    2,011.29/2,775.67 = 1,115.11/x
  3. Step 3: Cross multiply
    2,011.29x = 2,775.67 × 1,115.11
  4. Step 4: Simplify right side
    2,011.29x = 3,095,184.89
  5. Step 5: Solve for x
    x = 3,095,184.89/2,011.29
  6. Step 6: Final answer
    x = 1,538.91

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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.