Home / 1,435.86-2,149.74-1,129.14

Finding the Fourth Proportional to 1,435.86, 2,149.74 and 1,129.14

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Solution

The fourth proportional to 1,435.86, 2,149.74 and 1,129.14 is: 1,690.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,435.86 : 2,149.74 = 1,129.14 : x
  2. Step 2: Convert to fraction form
    1,435.86/2,149.74 = 1,129.14/x
  3. Step 3: Cross multiply
    1,435.86x = 2,149.74 × 1,129.14
  4. Step 4: Simplify right side
    1,435.86x = 2,427,357.42
  5. Step 5: Solve for x
    x = 2,427,357.42/1,435.86
  6. Step 6: Final answer
    x = 1,690.53

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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.