Home / 3,078.16-4,614.51-1,129.91

Finding the Fourth Proportional to 3,078.16, 4,614.51 and 1,129.91

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Solution

The fourth proportional to 3,078.16, 4,614.51 and 1,129.91 is: 1,693.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,078.16 : 4,614.51 = 1,129.91 : x
  2. Step 2: Convert to fraction form
    3,078.16/4,614.51 = 1,129.91/x
  3. Step 3: Cross multiply
    3,078.16x = 4,614.51 × 1,129.91
  4. Step 4: Simplify right side
    3,078.16x = 5,213,980.99
  5. Step 5: Solve for x
    x = 5,213,980.99/3,078.16
  6. Step 6: Final answer
    x = 1,693.86

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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.