Home / 1,555.58-2,146.80-892.59

Finding the Fourth Proportional to 1,555.58, 2,146.80 and 892.59

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Solution

The fourth proportional to 1,555.58, 2,146.80 and 892.59 is: 1,231.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,555.58 : 2,146.80 = 892.59 : x
  2. Step 2: Convert to fraction form
    1,555.58/2,146.80 = 892.59/x
  3. Step 3: Cross multiply
    1,555.58x = 2,146.80 × 892.59
  4. Step 4: Simplify right side
    1,555.58x = 1,916,212.21
  5. Step 5: Solve for x
    x = 1,916,212.21/1,555.58
  6. Step 6: Final answer
    x = 1,231.84

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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.