Home / 2,987.37-4,454.75-2,779.61

Finding the Fourth Proportional to 2,987.37, 4,454.75 and 2,779.61

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Solution

The fourth proportional to 2,987.37, 4,454.75 and 2,779.61 is: 4,144.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,987.37 : 4,454.75 = 2,779.61 : x
  2. Step 2: Convert to fraction form
    2,987.37/4,454.75 = 2,779.61/x
  3. Step 3: Cross multiply
    2,987.37x = 4,454.75 × 2,779.61
  4. Step 4: Simplify right side
    2,987.37x = 12,382,452.32
  5. Step 5: Solve for x
    x = 12,382,452.32/2,987.37
  6. Step 6: Final answer
    x = 4,144.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.