Home / 1,954.08-2,931.82-858.36

Finding the Fourth Proportional to 1,954.08, 2,931.82 and 858.36

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Solution

The fourth proportional to 1,954.08, 2,931.82 and 858.36 is: 1,287.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,954.08 : 2,931.82 = 858.36 : x
  2. Step 2: Convert to fraction form
    1,954.08/2,931.82 = 858.36/x
  3. Step 3: Cross multiply
    1,954.08x = 2,931.82 × 858.36
  4. Step 4: Simplify right side
    1,954.08x = 2,516,557.02
  5. Step 5: Solve for x
    x = 2,516,557.02/1,954.08
  6. Step 6: Final answer
    x = 1,287.85

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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.