Home / 2,784.08-4,176.16-1,139.48

Finding the Fourth Proportional to 2,784.08, 4,176.16 and 1,139.48

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Solution

The fourth proportional to 2,784.08, 4,176.16 and 1,139.48 is: 1,709.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,784.08 : 4,176.16 = 1,139.48 : x
  2. Step 2: Convert to fraction form
    2,784.08/4,176.16 = 1,139.48/x
  3. Step 3: Cross multiply
    2,784.08x = 4,176.16 × 1,139.48
  4. Step 4: Simplify right side
    2,784.08x = 4,758,650.80
  5. Step 5: Solve for x
    x = 4,758,650.80/2,784.08
  6. Step 6: Final answer
    x = 1,709.24

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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.