Home / 2,486.20-3,430-1,491.10

Finding the Fourth Proportional to 2,486.20, 3,430 and 1,491.10

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Solution

The fourth proportional to 2,486.20, 3,430 and 1,491.10 is: 2,057.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,486.20 : 3,430 = 1,491.10 : x
  2. Step 2: Convert to fraction form
    2,486.20/3,430 = 1,491.10/x
  3. Step 3: Cross multiply
    2,486.20x = 3,430 × 1,491.10
  4. Step 4: Simplify right side
    2,486.20x = 5,114,473
  5. Step 5: Solve for x
    x = 5,114,473/2,486.20
  6. Step 6: Final answer
    x = 2,057.14

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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.