Home / 2,457.13-3,680.76-1,220.80

Finding the Fourth Proportional to 2,457.13, 3,680.76 and 1,220.80

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Solution

The fourth proportional to 2,457.13, 3,680.76 and 1,220.80 is: 1,828.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,457.13 : 3,680.76 = 1,220.80 : x
  2. Step 2: Convert to fraction form
    2,457.13/3,680.76 = 1,220.80/x
  3. Step 3: Cross multiply
    2,457.13x = 3,680.76 × 1,220.80
  4. Step 4: Simplify right side
    2,457.13x = 4,493,471.81
  5. Step 5: Solve for x
    x = 4,493,471.81/2,457.13
  6. Step 6: Final answer
    x = 1,828.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.