Home / 1,770.39-2,440.26-1,396.71

Finding the Fourth Proportional to 1,770.39, 2,440.26 and 1,396.71

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Solution

The fourth proportional to 1,770.39, 2,440.26 and 1,396.71 is: 1,925.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,770.39 : 2,440.26 = 1,396.71 : x
  2. Step 2: Convert to fraction form
    1,770.39/2,440.26 = 1,396.71/x
  3. Step 3: Cross multiply
    1,770.39x = 2,440.26 × 1,396.71
  4. Step 4: Simplify right side
    1,770.39x = 3,408,335.54
  5. Step 5: Solve for x
    x = 3,408,335.54/1,770.39
  6. Step 6: Final answer
    x = 1,925.19

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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.