Home / 1,555.29-2,146.41-892.35

Finding the Fourth Proportional to 1,555.29, 2,146.41 and 892.35

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Solution

The fourth proportional to 1,555.29, 2,146.41 and 892.35 is: 1,231.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,555.29 : 2,146.41 = 892.35 : x
  2. Step 2: Convert to fraction form
    1,555.29/2,146.41 = 892.35/x
  3. Step 3: Cross multiply
    1,555.29x = 2,146.41 × 892.35
  4. Step 4: Simplify right side
    1,555.29x = 1,915,348.96
  5. Step 5: Solve for x
    x = 1,915,348.96/1,555.29
  6. Step 6: Final answer
    x = 1,231.51

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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.