Home / 4,988.61-7,478.28-2,213.82

Finding the Fourth Proportional to 4,988.61, 7,478.28 and 2,213.82

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Solution

The fourth proportional to 4,988.61, 7,478.28 and 2,213.82 is: 3,318.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,988.61 : 7,478.28 = 2,213.82 : x
  2. Step 2: Convert to fraction form
    4,988.61/7,478.28 = 2,213.82/x
  3. Step 3: Cross multiply
    4,988.61x = 7,478.28 × 2,213.82
  4. Step 4: Simplify right side
    4,988.61x = 16,555,565.83
  5. Step 5: Solve for x
    x = 16,555,565.83/4,988.61
  6. Step 6: Final answer
    x = 3,318.67

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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.