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Finding the Fourth Proportional to 7,378.84, 11,073.12 and 3,483.64

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Solution

The fourth proportional to 7,378.84, 11,073.12 and 3,483.64 is: 5,227.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,378.84 : 11,073.12 = 3,483.64 : x
  2. Step 2: Convert to fraction form
    7,378.84/11,073.12 = 3,483.64/x
  3. Step 3: Cross multiply
    7,378.84x = 11,073.12 × 3,483.64
  4. Step 4: Simplify right side
    7,378.84x = 38,574,763.76
  5. Step 5: Solve for x
    x = 38,574,763.76/7,378.84
  6. Step 6: Final answer
    x = 5,227.75

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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.