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Finding the Fourth Proportional to 2,390.30, 3,584.48 and 746.19

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Solution

The fourth proportional to 2,390.30, 3,584.48 and 746.19 is: 1,118.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,390.30 : 3,584.48 = 746.19 : x
  2. Step 2: Convert to fraction form
    2,390.30/3,584.48 = 746.19/x
  3. Step 3: Cross multiply
    2,390.30x = 3,584.48 × 746.19
  4. Step 4: Simplify right side
    2,390.30x = 2,674,699.40
  5. Step 5: Solve for x
    x = 2,674,699.40/2,390.30
  6. Step 6: Final answer
    x = 1,118.98

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.