Home / 1,935.66-2,666.33-1,561.60

Finding the Fourth Proportional to 1,935.66, 2,666.33 and 1,561.60

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Solution

The fourth proportional to 1,935.66, 2,666.33 and 1,561.60 is: 2,151.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,935.66 : 2,666.33 = 1,561.60 : x
  2. Step 2: Convert to fraction form
    1,935.66/2,666.33 = 1,561.60/x
  3. Step 3: Cross multiply
    1,935.66x = 2,666.33 × 1,561.60
  4. Step 4: Simplify right side
    1,935.66x = 4,163,736.40
  5. Step 5: Solve for x
    x = 4,163,736.40/1,935.66
  6. Step 6: Final answer
    x = 2,151.06

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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.