Home / 2,457.10-3,390.85-1,338.10

Finding the Fourth Proportional to 2,457.10, 3,390.85 and 1,338.10

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Solution

The fourth proportional to 2,457.10, 3,390.85 and 1,338.10 is: 1,846.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,457.10 : 3,390.85 = 1,338.10 : x
  2. Step 2: Convert to fraction form
    2,457.10/3,390.85 = 1,338.10/x
  3. Step 3: Cross multiply
    2,457.10x = 3,390.85 × 1,338.10
  4. Step 4: Simplify right side
    2,457.10x = 4,537,291.25
  5. Step 5: Solve for x
    x = 4,537,291.25/2,457.10
  6. Step 6: Final answer
    x = 1,846.61

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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.