Home / 2,653.11-3,980.31-1,874.63

Finding the Fourth Proportional to 2,653.11, 3,980.31 and 1,874.63

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Solution

The fourth proportional to 2,653.11, 3,980.31 and 1,874.63 is: 2,812.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,653.11 : 3,980.31 = 1,874.63 : x
  2. Step 2: Convert to fraction form
    2,653.11/3,980.31 = 1,874.63/x
  3. Step 3: Cross multiply
    2,653.11x = 3,980.31 × 1,874.63
  4. Step 4: Simplify right side
    2,653.11x = 7,461,588.63
  5. Step 5: Solve for x
    x = 7,461,588.63/2,653.11
  6. Step 6: Final answer
    x = 2,812.39

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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.