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Finding the Fourth Proportional to 4,068.52, 6,102.74 and 990.52

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Solution

The fourth proportional to 4,068.52, 6,102.74 and 990.52 is: 1,485.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,068.52 : 6,102.74 = 990.52 : x
  2. Step 2: Convert to fraction form
    4,068.52/6,102.74 = 990.52/x
  3. Step 3: Cross multiply
    4,068.52x = 6,102.74 × 990.52
  4. Step 4: Simplify right side
    4,068.52x = 6,044,886.02
  5. Step 5: Solve for x
    x = 6,044,886.02/4,068.52
  6. Step 6: Final answer
    x = 1,485.77

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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.