Home / 1,900.40-2,602.87-1,788.30

Finding the Fourth Proportional to 1,900.40, 2,602.87 and 1,788.30

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Solution

The fourth proportional to 1,900.40, 2,602.87 and 1,788.30 is: 2,449.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,900.40 : 2,602.87 = 1,788.30 : x
  2. Step 2: Convert to fraction form
    1,900.40/2,602.87 = 1,788.30/x
  3. Step 3: Cross multiply
    1,900.40x = 2,602.87 × 1,788.30
  4. Step 4: Simplify right side
    1,900.40x = 4,654,707.95
  5. Step 5: Solve for x
    x = 4,654,707.95/1,900.40
  6. Step 6: Final answer
    x = 2,449.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.