Home / 2,656.24-3,986.12-1,779.68

Finding the Fourth Proportional to 2,656.24, 3,986.12 and 1,779.68

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Solution

The fourth proportional to 2,656.24, 3,986.12 and 1,779.68 is: 2,670.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,656.24 : 3,986.12 = 1,779.68 : x
  2. Step 2: Convert to fraction form
    2,656.24/3,986.12 = 1,779.68/x
  3. Step 3: Cross multiply
    2,656.24x = 3,986.12 × 1,779.68
  4. Step 4: Simplify right side
    2,656.24x = 7,094,009.14
  5. Step 5: Solve for x
    x = 7,094,009.14/2,656.24
  6. Step 6: Final answer
    x = 2,670.70

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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.