Home / 2,312.01-3,189.11-1,317.08

Finding the Fourth Proportional to 2,312.01, 3,189.11 and 1,317.08

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Solution

The fourth proportional to 2,312.01, 3,189.11 and 1,317.08 is: 1,816.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,312.01 : 3,189.11 = 1,317.08 : x
  2. Step 2: Convert to fraction form
    2,312.01/3,189.11 = 1,317.08/x
  3. Step 3: Cross multiply
    2,312.01x = 3,189.11 × 1,317.08
  4. Step 4: Simplify right side
    2,312.01x = 4,200,290.47
  5. Step 5: Solve for x
    x = 4,200,290.47/2,312.01
  6. Step 6: Final answer
    x = 1,816.73

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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.