Home / 2,980.64-4,113.33-1,786.79

Finding the Fourth Proportional to 2,980.64, 4,113.33 and 1,786.79

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Solution

The fourth proportional to 2,980.64, 4,113.33 and 1,786.79 is: 2,465.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,980.64 : 4,113.33 = 1,786.79 : x
  2. Step 2: Convert to fraction form
    2,980.64/4,113.33 = 1,786.79/x
  3. Step 3: Cross multiply
    2,980.64x = 4,113.33 × 1,786.79
  4. Step 4: Simplify right side
    2,980.64x = 7,349,656.91
  5. Step 5: Solve for x
    x = 7,349,656.91/2,980.64
  6. Step 6: Final answer
    x = 2,465.80

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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.