Home / 2,120.16-2,926-1,235.92

Finding the Fourth Proportional to 2,120.16, 2,926 and 1,235.92

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Solution

The fourth proportional to 2,120.16, 2,926 and 1,235.92 is: 1,705.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,120.16 : 2,926 = 1,235.92 : x
  2. Step 2: Convert to fraction form
    2,120.16/2,926 = 1,235.92/x
  3. Step 3: Cross multiply
    2,120.16x = 2,926 × 1,235.92
  4. Step 4: Simplify right side
    2,120.16x = 3,616,301.92
  5. Step 5: Solve for x
    x = 3,616,301.92/2,120.16
  6. Step 6: Final answer
    x = 1,705.67

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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.