Home / 1,555.15-2,146.14-892.03

Finding the Fourth Proportional to 1,555.15, 2,146.14 and 892.03

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Solution

The fourth proportional to 1,555.15, 2,146.14 and 892.03 is: 1,231.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,555.15 : 2,146.14 = 892.03 : x
  2. Step 2: Convert to fraction form
    1,555.15/2,146.14 = 892.03/x
  3. Step 3: Cross multiply
    1,555.15x = 2,146.14 × 892.03
  4. Step 4: Simplify right side
    1,555.15x = 1,914,421.26
  5. Step 5: Solve for x
    x = 1,914,421.26/1,555.15
  6. Step 6: Final answer
    x = 1,231.02

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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.