Home / 1,949.32-2,690.23-1,109.84

Finding the Fourth Proportional to 1,949.32, 2,690.23 and 1,109.84

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Solution

The fourth proportional to 1,949.32, 2,690.23 and 1,109.84 is: 1,531.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,949.32 : 2,690.23 = 1,109.84 : x
  2. Step 2: Convert to fraction form
    1,949.32/2,690.23 = 1,109.84/x
  3. Step 3: Cross multiply
    1,949.32x = 2,690.23 × 1,109.84
  4. Step 4: Simplify right side
    1,949.32x = 2,985,710.72
  5. Step 5: Solve for x
    x = 2,985,710.72/1,949.32
  6. Step 6: Final answer
    x = 1,531.67

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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.