Home / 2,980.38-4,112.88-1,654.28

Finding the Fourth Proportional to 2,980.38, 4,112.88 and 1,654.28

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Solution

The fourth proportional to 2,980.38, 4,112.88 and 1,654.28 is: 2,282.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,980.38 : 4,112.88 = 1,654.28 : x
  2. Step 2: Convert to fraction form
    2,980.38/4,112.88 = 1,654.28/x
  3. Step 3: Cross multiply
    2,980.38x = 4,112.88 × 1,654.28
  4. Step 4: Simplify right side
    2,980.38x = 6,803,834.56
  5. Step 5: Solve for x
    x = 6,803,834.56/2,980.38
  6. Step 6: Final answer
    x = 2,282.87

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1.5x scale

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.