Home / 1,995.28-2,753.60-1,111.11

Finding the Fourth Proportional to 1,995.28, 2,753.60 and 1,111.11

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Solution

The fourth proportional to 1,995.28, 2,753.60 and 1,111.11 is: 1,533.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,995.28 : 2,753.60 = 1,111.11 : x
  2. Step 2: Convert to fraction form
    1,995.28/2,753.60 = 1,111.11/x
  3. Step 3: Cross multiply
    1,995.28x = 2,753.60 × 1,111.11
  4. Step 4: Simplify right side
    1,995.28x = 3,059,541.51
  5. Step 5: Solve for x
    x = 3,059,541.51/1,995.28
  6. Step 6: Final answer
    x = 1,533.39

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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.