Home / 1,897.38-2,618.19-1,111.28

Finding the Fourth Proportional to 1,897.38, 2,618.19 and 1,111.28

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Solution

The fourth proportional to 1,897.38, 2,618.19 and 1,111.28 is: 1,533.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,897.38 : 2,618.19 = 1,111.28 : x
  2. Step 2: Convert to fraction form
    1,897.38/2,618.19 = 1,111.28/x
  3. Step 3: Cross multiply
    1,897.38x = 2,618.19 × 1,111.28
  4. Step 4: Simplify right side
    1,897.38x = 2,909,529.09
  5. Step 5: Solve for x
    x = 2,909,529.09/1,897.38
  6. Step 6: Final answer
    x = 1,533.45

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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.