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Finding the Fourth Proportional to 7,684.26, 11,526.12 and 2,490

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Solution

The fourth proportional to 7,684.26, 11,526.12 and 2,490 is: 3,734.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,684.26 : 11,526.12 = 2,490 : x
  2. Step 2: Convert to fraction form
    7,684.26/11,526.12 = 2,490/x
  3. Step 3: Cross multiply
    7,684.26x = 11,526.12 × 2,490
  4. Step 4: Simplify right side
    7,684.26x = 28,700,038.80
  5. Step 5: Solve for x
    x = 28,700,038.80/7,684.26
  6. Step 6: Final answer
    x = 3,734.91

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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.