Home / 2,372.28-3,271.78-1,781.80

Finding the Fourth Proportional to 2,372.28, 3,271.78 and 1,781.80

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Solution

The fourth proportional to 2,372.28, 3,271.78 and 1,781.80 is: 2,457.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,372.28 : 3,271.78 = 1,781.80 : x
  2. Step 2: Convert to fraction form
    2,372.28/3,271.78 = 1,781.80/x
  3. Step 3: Cross multiply
    2,372.28x = 3,271.78 × 1,781.80
  4. Step 4: Simplify right side
    2,372.28x = 5,829,657.60
  5. Step 5: Solve for x
    x = 5,829,657.60/2,372.28
  6. Step 6: Final answer
    x = 2,457.41

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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.