Home / 1,897.19-2,618.85-1,111.49

Finding the Fourth Proportional to 1,897.19, 2,618.85 and 1,111.49

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Solution

The fourth proportional to 1,897.19, 2,618.85 and 1,111.49 is: 1,534.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,897.19 : 2,618.85 = 1,111.49 : x
  2. Step 2: Convert to fraction form
    1,897.19/2,618.85 = 1,111.49/x
  3. Step 3: Cross multiply
    1,897.19x = 2,618.85 × 1,111.49
  4. Step 4: Simplify right side
    1,897.19x = 2,910,825.59
  5. Step 5: Solve for x
    x = 2,910,825.59/1,897.19
  6. Step 6: Final answer
    x = 1,534.28

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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.