Home / 1,921.02-2,882.56-1,886.66

Finding the Fourth Proportional to 1,921.02, 2,882.56 and 1,886.66

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Solution

The fourth proportional to 1,921.02, 2,882.56 and 1,886.66 is: 2,831.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,921.02 : 2,882.56 = 1,886.66 : x
  2. Step 2: Convert to fraction form
    1,921.02/2,882.56 = 1,886.66/x
  3. Step 3: Cross multiply
    1,921.02x = 2,882.56 × 1,886.66
  4. Step 4: Simplify right side
    1,921.02x = 5,438,410.65
  5. Step 5: Solve for x
    x = 5,438,410.65/1,921.02
  6. Step 6: Final answer
    x = 2,831.00

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.