Home / 5,211.13-7,814.70-1,878.49

Finding the Fourth Proportional to 5,211.13, 7,814.70 and 1,878.49

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Solution

The fourth proportional to 5,211.13, 7,814.70 and 1,878.49 is: 2,817.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,211.13 : 7,814.70 = 1,878.49 : x
  2. Step 2: Convert to fraction form
    5,211.13/7,814.70 = 1,878.49/x
  3. Step 3: Cross multiply
    5,211.13x = 7,814.70 × 1,878.49
  4. Step 4: Simplify right side
    5,211.13x = 14,679,835.80
  5. Step 5: Solve for x
    x = 14,679,835.80/5,211.13
  6. Step 6: Final answer
    x = 2,817.02

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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.