Home / 1,723.08-2,378.82-1,318.55

Finding the Fourth Proportional to 1,723.08, 2,378.82 and 1,318.55

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Solution

The fourth proportional to 1,723.08, 2,378.82 and 1,318.55 is: 1,820.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,723.08 : 2,378.82 = 1,318.55 : x
  2. Step 2: Convert to fraction form
    1,723.08/2,378.82 = 1,318.55/x
  3. Step 3: Cross multiply
    1,723.08x = 2,378.82 × 1,318.55
  4. Step 4: Simplify right side
    1,723.08x = 3,136,582.87
  5. Step 5: Solve for x
    x = 3,136,582.87/1,723.08
  6. Step 6: Final answer
    x = 1,820.34

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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.