Home / 1,709.76-2,359.68-1,245.12

Finding the Fourth Proportional to 1,709.76, 2,359.68 and 1,245.12

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Solution

The fourth proportional to 1,709.76, 2,359.68 and 1,245.12 is: 1,718.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,709.76 : 2,359.68 = 1,245.12 : x
  2. Step 2: Convert to fraction form
    1,709.76/2,359.68 = 1,245.12/x
  3. Step 3: Cross multiply
    1,709.76x = 2,359.68 × 1,245.12
  4. Step 4: Simplify right side
    1,709.76x = 2,938,084.76
  5. Step 5: Solve for x
    x = 2,938,084.76/1,709.76
  6. Step 6: Final answer
    x = 1,718.42

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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.