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Finding the Fourth Proportional to 9,916.20, 14,879.16 and 4,368.84

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Solution

The fourth proportional to 9,916.20, 14,879.16 and 4,368.84 is: 6,555.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,916.20 : 14,879.16 = 4,368.84 : x
  2. Step 2: Convert to fraction form
    9,916.20/14,879.16 = 4,368.84/x
  3. Step 3: Cross multiply
    9,916.20x = 14,879.16 × 4,368.84
  4. Step 4: Simplify right side
    9,916.20x = 65,004,669.37
  5. Step 5: Solve for x
    x = 65,004,669.37/9,916.20
  6. Step 6: Final answer
    x = 6,555.40

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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.