Home / 4,555-6,831.89-1,779.74

Finding the Fourth Proportional to 4,555, 6,831.89 and 1,779.74

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Solution

The fourth proportional to 4,555, 6,831.89 and 1,779.74 is: 2,669.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,555 : 6,831.89 = 1,779.74 : x
  2. Step 2: Convert to fraction form
    4,555/6,831.89 = 1,779.74/x
  3. Step 3: Cross multiply
    4,555x = 6,831.89 × 1,779.74
  4. Step 4: Simplify right side
    4,555x = 12,158,987.91
  5. Step 5: Solve for x
    x = 12,158,987.91/4,555
  6. Step 6: Final answer
    x = 2,669.37

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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.