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Finding the Fourth Proportional to 1,653.78, 2,282.11 and 955.14

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Solution

The fourth proportional to 1,653.78, 2,282.11 and 955.14 is: 1,318.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,653.78 : 2,282.11 = 955.14 : x
  2. Step 2: Convert to fraction form
    1,653.78/2,282.11 = 955.14/x
  3. Step 3: Cross multiply
    1,653.78x = 2,282.11 × 955.14
  4. Step 4: Simplify right side
    1,653.78x = 2,179,734.55
  5. Step 5: Solve for x
    x = 2,179,734.55/1,653.78
  6. Step 6: Final answer
    x = 1,318.03

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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.