Home / 1,778.27-2,451.08-1,188.59

Finding the Fourth Proportional to 1,778.27, 2,451.08 and 1,188.59

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Solution

The fourth proportional to 1,778.27, 2,451.08 and 1,188.59 is: 1,638.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,778.27 : 2,451.08 = 1,188.59 : x
  2. Step 2: Convert to fraction form
    1,778.27/2,451.08 = 1,188.59/x
  3. Step 3: Cross multiply
    1,778.27x = 2,451.08 × 1,188.59
  4. Step 4: Simplify right side
    1,778.27x = 2,913,323.23
  5. Step 5: Solve for x
    x = 2,913,323.23/1,778.27
  6. Step 6: Final answer
    x = 1,638.29

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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.