Home / 1,245.14-1,718.52-1,035.05

Finding the Fourth Proportional to 1,245.14, 1,718.52 and 1,035.05

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Solution

The fourth proportional to 1,245.14, 1,718.52 and 1,035.05 is: 1,428.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,245.14 : 1,718.52 = 1,035.05 : x
  2. Step 2: Convert to fraction form
    1,245.14/1,718.52 = 1,035.05/x
  3. Step 3: Cross multiply
    1,245.14x = 1,718.52 × 1,035.05
  4. Step 4: Simplify right side
    1,245.14x = 1,778,741.65
  5. Step 5: Solve for x
    x = 1,778,741.65/1,245.14
  6. Step 6: Final answer
    x = 1,428.55

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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.