Home / 5,643.18-8,462.34-2,178

Finding the Fourth Proportional to 5,643.18, 8,462.34 and 2,178

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Solution

The fourth proportional to 5,643.18, 8,462.34 and 2,178 is: 3,266.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,643.18 : 8,462.34 = 2,178 : x
  2. Step 2: Convert to fraction form
    5,643.18/8,462.34 = 2,178/x
  3. Step 3: Cross multiply
    5,643.18x = 8,462.34 × 2,178
  4. Step 4: Simplify right side
    5,643.18x = 18,430,976.52
  5. Step 5: Solve for x
    x = 18,430,976.52/5,643.18
  6. Step 6: Final answer
    x = 3,266.06

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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.