Home / 1,919.32-2,648.62-1,080.07

Finding the Fourth Proportional to 1,919.32, 2,648.62 and 1,080.07

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Solution

The fourth proportional to 1,919.32, 2,648.62 and 1,080.07 is: 1,490.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,919.32 : 2,648.62 = 1,080.07 : x
  2. Step 2: Convert to fraction form
    1,919.32/2,648.62 = 1,080.07/x
  3. Step 3: Cross multiply
    1,919.32x = 2,648.62 × 1,080.07
  4. Step 4: Simplify right side
    1,919.32x = 2,860,695.00
  5. Step 5: Solve for x
    x = 2,860,695.00/1,919.32
  6. Step 6: Final answer
    x = 1,490.47

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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.