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Finding the Fourth Proportional to 2,927.40, 4,383.90 and 2,351.40

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Solution

The fourth proportional to 2,927.40, 4,383.90 and 2,351.40 is: 3,521.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,927.40 : 4,383.90 = 2,351.40 : x
  2. Step 2: Convert to fraction form
    2,927.40/4,383.90 = 2,351.40/x
  3. Step 3: Cross multiply
    2,927.40x = 4,383.90 × 2,351.40
  4. Step 4: Simplify right side
    2,927.40x = 10,308,302.46
  5. Step 5: Solve for x
    x = 10,308,302.46/2,927.40
  6. Step 6: Final answer
    x = 3,521.32

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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.