Home / 1,611.36-2,431.08-1,530.36

Finding the Fourth Proportional to 1,611.36, 2,431.08 and 1,530.36

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Solution

The fourth proportional to 1,611.36, 2,431.08 and 1,530.36 is: 2,308.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,611.36 : 2,431.08 = 1,530.36 : x
  2. Step 2: Convert to fraction form
    1,611.36/2,431.08 = 1,530.36/x
  3. Step 3: Cross multiply
    1,611.36x = 2,431.08 × 1,530.36
  4. Step 4: Simplify right side
    1,611.36x = 3,720,427.59
  5. Step 5: Solve for x
    x = 3,720,427.59/1,611.36
  6. Step 6: Final answer
    x = 2,308.87

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.