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Finding the Fourth Proportional to 9,915.35, 14,873.43 and 2,520

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Solution

The fourth proportional to 9,915.35, 14,873.43 and 2,520 is: 3,780.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,915.35 : 14,873.43 = 2,520 : x
  2. Step 2: Convert to fraction form
    9,915.35/14,873.43 = 2,520/x
  3. Step 3: Cross multiply
    9,915.35x = 14,873.43 × 2,520
  4. Step 4: Simplify right side
    9,915.35x = 37,481,043.60
  5. Step 5: Solve for x
    x = 37,481,043.60/9,915.35
  6. Step 6: Final answer
    x = 3,780.10

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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.