Home / 1,519.21-2,279.80-903.50

Finding the Fourth Proportional to 1,519.21, 2,279.80 and 903.50

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Solution

The fourth proportional to 1,519.21, 2,279.80 and 903.50 is: 1,355.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,519.21 : 2,279.80 = 903.50 : x
  2. Step 2: Convert to fraction form
    1,519.21/2,279.80 = 903.50/x
  3. Step 3: Cross multiply
    1,519.21x = 2,279.80 × 903.50
  4. Step 4: Simplify right side
    1,519.21x = 2,059,805.32
  5. Step 5: Solve for x
    x = 2,059,805.32/1,519.21
  6. Step 6: Final answer
    x = 1,355.84

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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.