Home / 1,788.21-2,466.64-1,116.40

Finding the Fourth Proportional to 1,788.21, 2,466.64 and 1,116.40

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Solution

The fourth proportional to 1,788.21, 2,466.64 and 1,116.40 is: 1,539.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,788.21 : 2,466.64 = 1,116.40 : x
  2. Step 2: Convert to fraction form
    1,788.21/2,466.64 = 1,116.40/x
  3. Step 3: Cross multiply
    1,788.21x = 2,466.64 × 1,116.40
  4. Step 4: Simplify right side
    1,788.21x = 2,753,744.77
  5. Step 5: Solve for x
    x = 2,753,744.77/1,788.21
  6. Step 6: Final answer
    x = 1,539.94

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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.