Home / 3,314.30-4,971.45-2,779.70

Finding the Fourth Proportional to 3,314.30, 4,971.45 and 2,779.70

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Solution

The fourth proportional to 3,314.30, 4,971.45 and 2,779.70 is: 4,169.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,314.30 : 4,971.45 = 2,779.70 : x
  2. Step 2: Convert to fraction form
    3,314.30/4,971.45 = 2,779.70/x
  3. Step 3: Cross multiply
    3,314.30x = 4,971.45 × 2,779.70
  4. Step 4: Simplify right side
    3,314.30x = 13,819,139.57
  5. Step 5: Solve for x
    x = 13,819,139.57/3,314.30
  6. Step 6: Final answer
    x = 4,169.55

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1.5x scale

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.