Home / 1,853.10-2,557.62-1,190.78

Finding the Fourth Proportional to 1,853.10, 2,557.62 and 1,190.78

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Solution

The fourth proportional to 1,853.10, 2,557.62 and 1,190.78 is: 1,643.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,853.10 : 2,557.62 = 1,190.78 : x
  2. Step 2: Convert to fraction form
    1,853.10/2,557.62 = 1,190.78/x
  3. Step 3: Cross multiply
    1,853.10x = 2,557.62 × 1,190.78
  4. Step 4: Simplify right side
    1,853.10x = 3,045,562.74
  5. Step 5: Solve for x
    x = 3,045,562.74/1,853.10
  6. Step 6: Final answer
    x = 1,643.50

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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.