Home / 2,975.20-4,462.85-1,127.19

Finding the Fourth Proportional to 2,975.20, 4,462.85 and 1,127.19

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Solution

The fourth proportional to 2,975.20, 4,462.85 and 1,127.19 is: 1,690.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,975.20 : 4,462.85 = 1,127.19 : x
  2. Step 2: Convert to fraction form
    2,975.20/4,462.85 = 1,127.19/x
  3. Step 3: Cross multiply
    2,975.20x = 4,462.85 × 1,127.19
  4. Step 4: Simplify right side
    2,975.20x = 5,030,479.89
  5. Step 5: Solve for x
    x = 5,030,479.89/2,975.20
  6. Step 6: Final answer
    x = 1,690.80

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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.