Home / 1,910.15-2,636.21-1,538.36

Finding the Fourth Proportional to 1,910.15, 2,636.21 and 1,538.36

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Solution

The fourth proportional to 1,910.15, 2,636.21 and 1,538.36 is: 2,123.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,910.15 : 2,636.21 = 1,538.36 : x
  2. Step 2: Convert to fraction form
    1,910.15/2,636.21 = 1,538.36/x
  3. Step 3: Cross multiply
    1,910.15x = 2,636.21 × 1,538.36
  4. Step 4: Simplify right side
    1,910.15x = 4,055,440.02
  5. Step 5: Solve for x
    x = 4,055,440.02/1,910.15
  6. Step 6: Final answer
    x = 2,123.10

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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.