Home / 2,135.21-2,946.61-1,191.06

Finding the Fourth Proportional to 2,135.21, 2,946.61 and 1,191.06

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Solution

The fourth proportional to 2,135.21, 2,946.61 and 1,191.06 is: 1,643.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,135.21 : 2,946.61 = 1,191.06 : x
  2. Step 2: Convert to fraction form
    2,135.21/2,946.61 = 1,191.06/x
  3. Step 3: Cross multiply
    2,135.21x = 2,946.61 × 1,191.06
  4. Step 4: Simplify right side
    2,135.21x = 3,509,583.35
  5. Step 5: Solve for x
    x = 3,509,583.35/2,135.21
  6. Step 6: Final answer
    x = 1,643.67

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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.