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Finding the Fourth Proportional to 2,905.52, 4,359 and 957.76

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Solution

The fourth proportional to 2,905.52, 4,359 and 957.76 is: 1,436.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,905.52 : 4,359 = 957.76 : x
  2. Step 2: Convert to fraction form
    2,905.52/4,359 = 957.76/x
  3. Step 3: Cross multiply
    2,905.52x = 4,359 × 957.76
  4. Step 4: Simplify right side
    2,905.52x = 4,174,875.84
  5. Step 5: Solve for x
    x = 4,174,875.84/2,905.52
  6. Step 6: Final answer
    x = 1,436.88

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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.