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Finding the Fourth Proportional to 7,124.44, 9,830.06 and 4,138.52

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Solution

The fourth proportional to 7,124.44, 9,830.06 and 4,138.52 is: 5,710.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,124.44 : 9,830.06 = 4,138.52 : x
  2. Step 2: Convert to fraction form
    7,124.44/9,830.06 = 4,138.52/x
  3. Step 3: Cross multiply
    7,124.44x = 9,830.06 × 4,138.52
  4. Step 4: Simplify right side
    7,124.44x = 40,681,899.91
  5. Step 5: Solve for x
    x = 40,681,899.91/7,124.44
  6. Step 6: Final answer
    x = 5,710.19

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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.