Home / 1,921.61-2,651.58-1,332.33

Finding the Fourth Proportional to 1,921.61, 2,651.58 and 1,332.33

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Solution

The fourth proportional to 1,921.61, 2,651.58 and 1,332.33 is: 1,838.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,921.61 : 2,651.58 = 1,332.33 : x
  2. Step 2: Convert to fraction form
    1,921.61/2,651.58 = 1,332.33/x
  3. Step 3: Cross multiply
    1,921.61x = 2,651.58 × 1,332.33
  4. Step 4: Simplify right side
    1,921.61x = 3,532,779.58
  5. Step 5: Solve for x
    x = 3,532,779.58/1,921.61
  6. Step 6: Final answer
    x = 1,838.45

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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.