Home / 2,312.13-3,190.74-1,317.36

Finding the Fourth Proportional to 2,312.13, 3,190.74 and 1,317.36

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Solution

The fourth proportional to 2,312.13, 3,190.74 and 1,317.36 is: 1,817.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,312.13 : 3,190.74 = 1,317.36 : x
  2. Step 2: Convert to fraction form
    2,312.13/3,190.74 = 1,317.36/x
  3. Step 3: Cross multiply
    2,312.13x = 3,190.74 × 1,317.36
  4. Step 4: Simplify right side
    2,312.13x = 4,203,353.25
  5. Step 5: Solve for x
    x = 4,203,353.25/2,312.13
  6. Step 6: Final answer
    x = 1,817.96

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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.