Home / 2,814.60-4,220.40-866.28

Finding the Fourth Proportional to 2,814.60, 4,220.40 and 866.28

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Solution

The fourth proportional to 2,814.60, 4,220.40 and 866.28 is: 1,298.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,814.60 : 4,220.40 = 866.28 : x
  2. Step 2: Convert to fraction form
    2,814.60/4,220.40 = 866.28/x
  3. Step 3: Cross multiply
    2,814.60x = 4,220.40 × 866.28
  4. Step 4: Simplify right side
    2,814.60x = 3,656,048.11
  5. Step 5: Solve for x
    x = 3,656,048.11/2,814.60
  6. Step 6: Final answer
    x = 1,298.96

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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.