Home / 2,312.36-3,191.22-1,368.92

Finding the Fourth Proportional to 2,312.36, 3,191.22 and 1,368.92

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Solution

The fourth proportional to 2,312.36, 3,191.22 and 1,368.92 is: 1,889.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,312.36 : 3,191.22 = 1,368.92 : x
  2. Step 2: Convert to fraction form
    2,312.36/3,191.22 = 1,368.92/x
  3. Step 3: Cross multiply
    2,312.36x = 3,191.22 × 1,368.92
  4. Step 4: Simplify right side
    2,312.36x = 4,368,524.88
  5. Step 5: Solve for x
    x = 4,368,524.88/2,312.36
  6. Step 6: Final answer
    x = 1,889.21

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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.