Home / 1,861.50-2,564.64-1,440.41

Finding the Fourth Proportional to 1,861.50, 2,564.64 and 1,440.41

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Solution

The fourth proportional to 1,861.50, 2,564.64 and 1,440.41 is: 1,984.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,861.50 : 2,564.64 = 1,440.41 : x
  2. Step 2: Convert to fraction form
    1,861.50/2,564.64 = 1,440.41/x
  3. Step 3: Cross multiply
    1,861.50x = 2,564.64 × 1,440.41
  4. Step 4: Simplify right side
    1,861.50x = 3,694,120.28
  5. Step 5: Solve for x
    x = 3,694,120.28/1,861.50
  6. Step 6: Final answer
    x = 1,984.49

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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.