Home / 1,340.39-1,847.40-1,091.18

Finding the Fourth Proportional to 1,340.39, 1,847.40 and 1,091.18

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Solution

The fourth proportional to 1,340.39, 1,847.40 and 1,091.18 is: 1,503.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,340.39 : 1,847.40 = 1,091.18 : x
  2. Step 2: Convert to fraction form
    1,340.39/1,847.40 = 1,091.18/x
  3. Step 3: Cross multiply
    1,340.39x = 1,847.40 × 1,091.18
  4. Step 4: Simplify right side
    1,340.39x = 2,015,845.93
  5. Step 5: Solve for x
    x = 2,015,845.93/1,340.39
  6. Step 6: Final answer
    x = 1,503.92

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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.