Home / 1,853.37-2,555.70-1,223.07

Finding the Fourth Proportional to 1,853.37, 2,555.70 and 1,223.07

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Solution

The fourth proportional to 1,853.37, 2,555.70 and 1,223.07 is: 1,686.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,853.37 : 2,555.70 = 1,223.07 : x
  2. Step 2: Convert to fraction form
    1,853.37/2,555.70 = 1,223.07/x
  3. Step 3: Cross multiply
    1,853.37x = 2,555.70 × 1,223.07
  4. Step 4: Simplify right side
    1,853.37x = 3,125,787.22
  5. Step 5: Solve for x
    x = 3,125,787.22/1,853.37
  6. Step 6: Final answer
    x = 1,686.55

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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.