Home / 2,719.12-3,745.72-1,970.88

Finding the Fourth Proportional to 2,719.12, 3,745.72 and 1,970.88

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Solution

The fourth proportional to 2,719.12, 3,745.72 and 1,970.88 is: 2,714.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,719.12 : 3,745.72 = 1,970.88 : x
  2. Step 2: Convert to fraction form
    2,719.12/3,745.72 = 1,970.88/x
  3. Step 3: Cross multiply
    2,719.12x = 3,745.72 × 1,970.88
  4. Step 4: Simplify right side
    2,719.12x = 7,382,364.63
  5. Step 5: Solve for x
    x = 7,382,364.63/2,719.12
  6. Step 6: Final answer
    x = 2,714.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.