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Finding the Fourth Proportional to 7,018.61, 9,687.31 and 4,629.01

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Solution

The fourth proportional to 7,018.61, 9,687.31 and 4,629.01 is: 6,389.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,018.61 : 9,687.31 = 4,629.01 : x
  2. Step 2: Convert to fraction form
    7,018.61/9,687.31 = 4,629.01/x
  3. Step 3: Cross multiply
    7,018.61x = 9,687.31 × 4,629.01
  4. Step 4: Simplify right side
    7,018.61x = 44,842,631.72
  5. Step 5: Solve for x
    x = 44,842,631.72/7,018.61
  6. Step 6: Final answer
    x = 6,389.11

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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.