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Finding the Fourth Proportional to 1,551.79, 2,141.40 and 962.38

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Solution

The fourth proportional to 1,551.79, 2,141.40 and 962.38 is: 1,328.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,551.79 : 2,141.40 = 962.38 : x
  2. Step 2: Convert to fraction form
    1,551.79/2,141.40 = 962.38/x
  3. Step 3: Cross multiply
    1,551.79x = 2,141.40 × 962.38
  4. Step 4: Simplify right side
    1,551.79x = 2,060,840.53
  5. Step 5: Solve for x
    x = 2,060,840.53/1,551.79
  6. Step 6: Final answer
    x = 1,328.04

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.