Home / 2,110.78-2,913.20-1,226.67

Finding the Fourth Proportional to 2,110.78, 2,913.20 and 1,226.67

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Solution

The fourth proportional to 2,110.78, 2,913.20 and 1,226.67 is: 1,692.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,110.78 : 2,913.20 = 1,226.67 : x
  2. Step 2: Convert to fraction form
    2,110.78/2,913.20 = 1,226.67/x
  3. Step 3: Cross multiply
    2,110.78x = 2,913.20 × 1,226.67
  4. Step 4: Simplify right side
    2,110.78x = 3,573,535.04
  5. Step 5: Solve for x
    x = 3,573,535.04/2,110.78
  6. Step 6: Final answer
    x = 1,692.99

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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.