Home / 1,853.20-2,557.40-1,190.31

Finding the Fourth Proportional to 1,853.20, 2,557.40 and 1,190.31

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Solution

The fourth proportional to 1,853.20, 2,557.40 and 1,190.31 is: 1,642.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,853.20 : 2,557.40 = 1,190.31 : x
  2. Step 2: Convert to fraction form
    1,853.20/2,557.40 = 1,190.31/x
  3. Step 3: Cross multiply
    1,853.20x = 2,557.40 × 1,190.31
  4. Step 4: Simplify right side
    1,853.20x = 3,044,088.98
  5. Step 5: Solve for x
    x = 3,044,088.98/1,853.20
  6. Step 6: Final answer
    x = 1,642.61

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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.