Home / 1,913.23-2,866.13-1,120.67

Finding the Fourth Proportional to 1,913.23, 2,866.13 and 1,120.67

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Solution

The fourth proportional to 1,913.23, 2,866.13 and 1,120.67 is: 1,678.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,913.23 : 2,866.13 = 1,120.67 : x
  2. Step 2: Convert to fraction form
    1,913.23/2,866.13 = 1,120.67/x
  3. Step 3: Cross multiply
    1,913.23x = 2,866.13 × 1,120.67
  4. Step 4: Simplify right side
    1,913.23x = 3,211,987.23
  5. Step 5: Solve for x
    x = 3,211,987.23/1,913.23
  6. Step 6: Final answer
    x = 1,678.83

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.