Home / 1,451.57-2,003.10-788.40

Finding the Fourth Proportional to 1,451.57, 2,003.10 and 788.40

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Solution

The fourth proportional to 1,451.57, 2,003.10 and 788.40 is: 1,087.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,451.57 : 2,003.10 = 788.40 : x
  2. Step 2: Convert to fraction form
    1,451.57/2,003.10 = 788.40/x
  3. Step 3: Cross multiply
    1,451.57x = 2,003.10 × 788.40
  4. Step 4: Simplify right side
    1,451.57x = 1,579,241.08
  5. Step 5: Solve for x
    x = 1,579,241.08/1,451.57
  6. Step 6: Final answer
    x = 1,087.96

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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.