Home / 2,889.46-3,987.48-1,695.15

Finding the Fourth Proportional to 2,889.46, 3,987.48 and 1,695.15

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Solution

The fourth proportional to 2,889.46, 3,987.48 and 1,695.15 is: 2,339.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,889.46 : 3,987.48 = 1,695.15 : x
  2. Step 2: Convert to fraction form
    2,889.46/3,987.48 = 1,695.15/x
  3. Step 3: Cross multiply
    2,889.46x = 3,987.48 × 1,695.15
  4. Step 4: Simplify right side
    2,889.46x = 6,759,376.72
  5. Step 5: Solve for x
    x = 6,759,376.72/2,889.46
  6. Step 6: Final answer
    x = 2,339.32

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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.