Home / 2,457.80-3,391.69-1,338.73

Finding the Fourth Proportional to 2,457.80, 3,391.69 and 1,338.73

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Solution

The fourth proportional to 2,457.80, 3,391.69 and 1,338.73 is: 1,847.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,457.80 : 3,391.69 = 1,338.73 : x
  2. Step 2: Convert to fraction form
    2,457.80/3,391.69 = 1,338.73/x
  3. Step 3: Cross multiply
    2,457.80x = 3,391.69 × 1,338.73
  4. Step 4: Simplify right side
    2,457.80x = 4,540,547.84
  5. Step 5: Solve for x
    x = 4,540,547.84/2,457.80
  6. Step 6: Final answer
    x = 1,847.40

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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.