Home / 3,188.34-4,389.93-2,896.74

Finding the Fourth Proportional to 3,188.34, 4,389.93 and 2,896.74

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Solution

The fourth proportional to 3,188.34, 4,389.93 and 2,896.74 is: 3,988.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,188.34 : 4,389.93 = 2,896.74 : x
  2. Step 2: Convert to fraction form
    3,188.34/4,389.93 = 2,896.74/x
  3. Step 3: Cross multiply
    3,188.34x = 4,389.93 × 2,896.74
  4. Step 4: Simplify right side
    3,188.34x = 12,716,485.83
  5. Step 5: Solve for x
    x = 12,716,485.83/3,188.34
  6. Step 6: Final answer
    x = 3,988.43

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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.