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Finding the Fourth Proportional to 9,651.56, 14,478.35 and 3,078

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Solution

The fourth proportional to 9,651.56, 14,478.35 and 3,078 is: 4,617.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,651.56 : 14,478.35 = 3,078 : x
  2. Step 2: Convert to fraction form
    9,651.56/14,478.35 = 3,078/x
  3. Step 3: Cross multiply
    9,651.56x = 14,478.35 × 3,078
  4. Step 4: Simplify right side
    9,651.56x = 44,564,345.91
  5. Step 5: Solve for x
    x = 44,564,345.91/9,651.56
  6. Step 6: Final answer
    x = 4,617.32

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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.