Home / 1,910.92-2,861.52-1,259.68

Finding the Fourth Proportional to 1,910.92, 2,861.52 and 1,259.68

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Solution

The fourth proportional to 1,910.92, 2,861.52 and 1,259.68 is: 1,886.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,910.92 : 2,861.52 = 1,259.68 : x
  2. Step 2: Convert to fraction form
    1,910.92/2,861.52 = 1,259.68/x
  3. Step 3: Cross multiply
    1,910.92x = 2,861.52 × 1,259.68
  4. Step 4: Simplify right side
    1,910.92x = 3,604,599.51
  5. Step 5: Solve for x
    x = 3,604,599.51/1,910.92
  6. Step 6: Final answer
    x = 1,886.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.