Home / 1,788.18-2,465.30-1,228.43

Finding the Fourth Proportional to 1,788.18, 2,465.30 and 1,228.43

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Solution

The fourth proportional to 1,788.18, 2,465.30 and 1,228.43 is: 1,693.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,788.18 : 2,465.30 = 1,228.43 : x
  2. Step 2: Convert to fraction form
    1,788.18/2,465.30 = 1,228.43/x
  3. Step 3: Cross multiply
    1,788.18x = 2,465.30 × 1,228.43
  4. Step 4: Simplify right side
    1,788.18x = 3,028,430.01
  5. Step 5: Solve for x
    x = 3,028,430.01/1,788.18
  6. Step 6: Final answer
    x = 1,693.58

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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.