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Finding the Fourth Proportional to 7,503.84, 11,255.80 and 3,118.96

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Solution

The fourth proportional to 7,503.84, 11,255.80 and 3,118.96 is: 4,678.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,503.84 : 11,255.80 = 3,118.96 : x
  2. Step 2: Convert to fraction form
    7,503.84/11,255.80 = 3,118.96/x
  3. Step 3: Cross multiply
    7,503.84x = 11,255.80 × 3,118.96
  4. Step 4: Simplify right side
    7,503.84x = 35,106,389.97
  5. Step 5: Solve for x
    x = 35,106,389.97/7,503.84
  6. Step 6: Final answer
    x = 4,678.46

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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.