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Finding the Fourth Proportional to 2,561.58, 3,842.37 and 918.23

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Solution

The fourth proportional to 2,561.58, 3,842.37 and 918.23 is: 1,377.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,561.58 : 3,842.37 = 918.23 : x
  2. Step 2: Convert to fraction form
    2,561.58/3,842.37 = 918.23/x
  3. Step 3: Cross multiply
    2,561.58x = 3,842.37 × 918.23
  4. Step 4: Simplify right side
    2,561.58x = 3,528,160.19
  5. Step 5: Solve for x
    x = 3,528,160.19/2,561.58
  6. Step 6: Final answer
    x = 1,377.34

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1.5x scale

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.