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Finding the Fourth Proportional to 2,905.86, 4,359 and 958.26

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Solution

The fourth proportional to 2,905.86, 4,359 and 958.26 is: 1,437.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,905.86 : 4,359 = 958.26 : x
  2. Step 2: Convert to fraction form
    2,905.86/4,359 = 958.26/x
  3. Step 3: Cross multiply
    2,905.86x = 4,359 × 958.26
  4. Step 4: Simplify right side
    2,905.86x = 4,177,055.34
  5. Step 5: Solve for x
    x = 4,177,055.34/2,905.86
  6. Step 6: Final answer
    x = 1,437.46

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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.