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Finding the Fourth Proportional to 2,376.84, 3,564.86 and 645.06

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Solution

The fourth proportional to 2,376.84, 3,564.86 and 645.06 is: 967.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,376.84 : 3,564.86 = 645.06 : x
  2. Step 2: Convert to fraction form
    2,376.84/3,564.86 = 645.06/x
  3. Step 3: Cross multiply
    2,376.84x = 3,564.86 × 645.06
  4. Step 4: Simplify right side
    2,376.84x = 2,299,548.59
  5. Step 5: Solve for x
    x = 2,299,548.59/2,376.84
  6. Step 6: Final answer
    x = 967.48

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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.