Home / 1,215.03-1,822.39-556.72

Finding the Fourth Proportional to 1,215.03, 1,822.39 and 556.72

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Solution

The fourth proportional to 1,215.03, 1,822.39 and 556.72 is: 835.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,215.03 : 1,822.39 = 556.72 : x
  2. Step 2: Convert to fraction form
    1,215.03/1,822.39 = 556.72/x
  3. Step 3: Cross multiply
    1,215.03x = 1,822.39 × 556.72
  4. Step 4: Simplify right side
    1,215.03x = 1,014,560.96
  5. Step 5: Solve for x
    x = 1,014,560.96/1,215.03
  6. Step 6: Final answer
    x = 835.01

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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.