Home / 2,145.39-2,961.33-1,649.67

Finding the Fourth Proportional to 2,145.39, 2,961.33 and 1,649.67

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Solution

The fourth proportional to 2,145.39, 2,961.33 and 1,649.67 is: 2,277.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,145.39 : 2,961.33 = 1,649.67 : x
  2. Step 2: Convert to fraction form
    2,145.39/2,961.33 = 1,649.67/x
  3. Step 3: Cross multiply
    2,145.39x = 2,961.33 × 1,649.67
  4. Step 4: Simplify right side
    2,145.39x = 4,885,217.26
  5. Step 5: Solve for x
    x = 4,885,217.26/2,145.39
  6. Step 6: Final answer
    x = 2,277.08

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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.