Home / 1,911.05-2,634.81-1,237.67

Finding the Fourth Proportional to 1,911.05, 2,634.81 and 1,237.67

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Solution

The fourth proportional to 1,911.05, 2,634.81 and 1,237.67 is: 1,706.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,911.05 : 2,634.81 = 1,237.67 : x
  2. Step 2: Convert to fraction form
    1,911.05/2,634.81 = 1,237.67/x
  3. Step 3: Cross multiply
    1,911.05x = 2,634.81 × 1,237.67
  4. Step 4: Simplify right side
    1,911.05x = 3,261,013.43
  5. Step 5: Solve for x
    x = 3,261,013.43/1,911.05
  6. Step 6: Final answer
    x = 1,706.40

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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.