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Finding the Fourth Proportional to 9,918.70, 14,878.04 and 4,071.19

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Solution

The fourth proportional to 9,918.70, 14,878.04 and 4,071.19 is: 6,106.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,918.70 : 14,878.04 = 4,071.19 : x
  2. Step 2: Convert to fraction form
    9,918.70/14,878.04 = 4,071.19/x
  3. Step 3: Cross multiply
    9,918.70x = 14,878.04 × 4,071.19
  4. Step 4: Simplify right side
    9,918.70x = 60,571,307.31
  5. Step 5: Solve for x
    x = 60,571,307.31/9,918.70
  6. Step 6: Final answer
    x = 6,106.78

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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.