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Finding the Fourth Proportional to 9,762.48, 14,643 and 3,915

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Solution

The fourth proportional to 9,762.48, 14,643 and 3,915 is: 5,872.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,762.48 : 14,643 = 3,915 : x
  2. Step 2: Convert to fraction form
    9,762.48/14,643 = 3,915/x
  3. Step 3: Cross multiply
    9,762.48x = 14,643 × 3,915
  4. Step 4: Simplify right side
    9,762.48x = 57,327,345
  5. Step 5: Solve for x
    x = 57,327,345/9,762.48
  6. Step 6: Final answer
    x = 5,872.21

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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.