Home / 1,770.36-2,439.21-1,320.33

Finding the Fourth Proportional to 1,770.36, 2,439.21 and 1,320.33

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Solution

The fourth proportional to 1,770.36, 2,439.21 and 1,320.33 is: 1,819.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,770.36 : 2,439.21 = 1,320.33 : x
  2. Step 2: Convert to fraction form
    1,770.36/2,439.21 = 1,320.33/x
  3. Step 3: Cross multiply
    1,770.36x = 2,439.21 × 1,320.33
  4. Step 4: Simplify right side
    1,770.36x = 3,220,562.14
  5. Step 5: Solve for x
    x = 3,220,562.14/1,770.36
  6. Step 6: Final answer
    x = 1,819.16

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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.