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Finding the Fourth Proportional to 2,955.99, 4,078.71 and 1,837.20

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Solution

The fourth proportional to 2,955.99, 4,078.71 and 1,837.20 is: 2,534.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,955.99 : 4,078.71 = 1,837.20 : x
  2. Step 2: Convert to fraction form
    2,955.99/4,078.71 = 1,837.20/x
  3. Step 3: Cross multiply
    2,955.99x = 4,078.71 × 1,837.20
  4. Step 4: Simplify right side
    2,955.99x = 7,493,406.01
  5. Step 5: Solve for x
    x = 7,493,406.01/2,955.99
  6. Step 6: Final answer
    x = 2,534.99

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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.