Home / 2,178.51-3,271.96-1,866.86

Finding the Fourth Proportional to 2,178.51, 3,271.96 and 1,866.86

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Solution

The fourth proportional to 2,178.51, 3,271.96 and 1,866.86 is: 2,803.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,178.51 : 3,271.96 = 1,866.86 : x
  2. Step 2: Convert to fraction form
    2,178.51/3,271.96 = 1,866.86/x
  3. Step 3: Cross multiply
    2,178.51x = 3,271.96 × 1,866.86
  4. Step 4: Simplify right side
    2,178.51x = 6,108,291.25
  5. Step 5: Solve for x
    x = 6,108,291.25/2,178.51
  6. Step 6: Final answer
    x = 2,803.88

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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.