Home / 2,779.14-4,170.54-1,047.78

Finding the Fourth Proportional to 2,779.14, 4,170.54 and 1,047.78

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Solution

The fourth proportional to 2,779.14, 4,170.54 and 1,047.78 is: 1,572.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,779.14 : 4,170.54 = 1,047.78 : x
  2. Step 2: Convert to fraction form
    2,779.14/4,170.54 = 1,047.78/x
  3. Step 3: Cross multiply
    2,779.14x = 4,170.54 × 1,047.78
  4. Step 4: Simplify right side
    2,779.14x = 4,369,808.40
  5. Step 5: Solve for x
    x = 4,369,808.40/2,779.14
  6. Step 6: Final answer
    x = 1,572.36

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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.