Home / 1,861.92-2,567.32-1,188.81

Finding the Fourth Proportional to 1,861.92, 2,567.32 and 1,188.81

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Solution

The fourth proportional to 1,861.92, 2,567.32 and 1,188.81 is: 1,639.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,861.92 : 2,567.32 = 1,188.81 : x
  2. Step 2: Convert to fraction form
    1,861.92/2,567.32 = 1,188.81/x
  3. Step 3: Cross multiply
    1,861.92x = 2,567.32 × 1,188.81
  4. Step 4: Simplify right side
    1,861.92x = 3,052,056.06
  5. Step 5: Solve for x
    x = 3,052,056.06/1,861.92
  6. Step 6: Final answer
    x = 1,639.20

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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.