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Finding the Fourth Proportional to 2,390.70, 3,603.53 and 2,291.82

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Solution

The fourth proportional to 2,390.70, 3,603.53 and 2,291.82 is: 3,454.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,390.70 : 3,603.53 = 2,291.82 : x
  2. Step 2: Convert to fraction form
    2,390.70/3,603.53 = 2,291.82/x
  3. Step 3: Cross multiply
    2,390.70x = 3,603.53 × 2,291.82
  4. Step 4: Simplify right side
    2,390.70x = 8,258,630.67
  5. Step 5: Solve for x
    x = 8,258,630.67/2,390.70
  6. Step 6: Final answer
    x = 3,454.48

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.