Home / 2,457.09-3,390.87-1,338.12

Finding the Fourth Proportional to 2,457.09, 3,390.87 and 1,338.12

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Solution

The fourth proportional to 2,457.09, 3,390.87 and 1,338.12 is: 1,846.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,457.09 : 3,390.87 = 1,338.12 : x
  2. Step 2: Convert to fraction form
    2,457.09/3,390.87 = 1,338.12/x
  3. Step 3: Cross multiply
    2,457.09x = 3,390.87 × 1,338.12
  4. Step 4: Simplify right side
    2,457.09x = 4,537,390.96
  5. Step 5: Solve for x
    x = 4,537,390.96/2,457.09
  6. Step 6: Final answer
    x = 1,846.65

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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.