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Finding the Fourth Proportional to 7,605.63, 11,408.31 and 2,988.63

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Solution

The fourth proportional to 7,605.63, 11,408.31 and 2,988.63 is: 4,482.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,605.63 : 11,408.31 = 2,988.63 : x
  2. Step 2: Convert to fraction form
    7,605.63/11,408.31 = 2,988.63/x
  3. Step 3: Cross multiply
    7,605.63x = 11,408.31 × 2,988.63
  4. Step 4: Simplify right side
    7,605.63x = 34,095,217.52
  5. Step 5: Solve for x
    x = 34,095,217.52/7,605.63
  6. Step 6: Final answer
    x = 4,482.89

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1.5x scale

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.