Home / 2,105.19-2,905.18-1,160.96

Finding the Fourth Proportional to 2,105.19, 2,905.18 and 1,160.96

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Solution

The fourth proportional to 2,105.19, 2,905.18 and 1,160.96 is: 1,602.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,105.19 : 2,905.18 = 1,160.96 : x
  2. Step 2: Convert to fraction form
    2,105.19/2,905.18 = 1,160.96/x
  3. Step 3: Cross multiply
    2,105.19x = 2,905.18 × 1,160.96
  4. Step 4: Simplify right side
    2,105.19x = 3,372,780.34
  5. Step 5: Solve for x
    x = 3,372,780.34/2,105.19
  6. Step 6: Final answer
    x = 1,602.13

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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.