Home / 2,315.58-3,195.54-1,431.36

Finding the Fourth Proportional to 2,315.58, 3,195.54 and 1,431.36

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Solution

The fourth proportional to 2,315.58, 3,195.54 and 1,431.36 is: 1,975.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,315.58 : 3,195.54 = 1,431.36 : x
  2. Step 2: Convert to fraction form
    2,315.58/3,195.54 = 1,431.36/x
  3. Step 3: Cross multiply
    2,315.58x = 3,195.54 × 1,431.36
  4. Step 4: Simplify right side
    2,315.58x = 4,573,968.13
  5. Step 5: Solve for x
    x = 4,573,968.13/2,315.58
  6. Step 6: Final answer
    x = 1,975.30

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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.