Home / 2,130.87-2,941.41-1,246.68

Finding the Fourth Proportional to 2,130.87, 2,941.41 and 1,246.68

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Solution

The fourth proportional to 2,130.87, 2,941.41 and 1,246.68 is: 1,720.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,130.87 : 2,941.41 = 1,246.68 : x
  2. Step 2: Convert to fraction form
    2,130.87/2,941.41 = 1,246.68/x
  3. Step 3: Cross multiply
    2,130.87x = 2,941.41 × 1,246.68
  4. Step 4: Simplify right side
    2,130.87x = 3,666,997.02
  5. Step 5: Solve for x
    x = 3,666,997.02/2,130.87
  6. Step 6: Final answer
    x = 1,720.89

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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.