Home / 1,870.75-2,581.36-1,198.18

Finding the Fourth Proportional to 1,870.75, 2,581.36 and 1,198.18

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Solution

The fourth proportional to 1,870.75, 2,581.36 and 1,198.18 is: 1,653.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,870.75 : 2,581.36 = 1,198.18 : x
  2. Step 2: Convert to fraction form
    1,870.75/2,581.36 = 1,198.18/x
  3. Step 3: Cross multiply
    1,870.75x = 2,581.36 × 1,198.18
  4. Step 4: Simplify right side
    1,870.75x = 3,092,933.92
  5. Step 5: Solve for x
    x = 3,092,933.92/1,870.75
  6. Step 6: Final answer
    x = 1,653.31

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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.