Home / 1,775.80-2,449.34-1,539.34

Finding the Fourth Proportional to 1,775.80, 2,449.34 and 1,539.34

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Solution

The fourth proportional to 1,775.80, 2,449.34 and 1,539.34 is: 2,123.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,775.80 : 2,449.34 = 1,539.34 : x
  2. Step 2: Convert to fraction form
    1,775.80/2,449.34 = 1,539.34/x
  3. Step 3: Cross multiply
    1,775.80x = 2,449.34 × 1,539.34
  4. Step 4: Simplify right side
    1,775.80x = 3,770,358.99
  5. Step 5: Solve for x
    x = 3,770,358.99/1,775.80
  6. Step 6: Final answer
    x = 2,123.19

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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.