Home / 2,980.24-4,112.96-1,654.20

Finding the Fourth Proportional to 2,980.24, 4,112.96 and 1,654.20

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Solution

The fourth proportional to 2,980.24, 4,112.96 and 1,654.20 is: 2,282.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,980.24 : 4,112.96 = 1,654.20 : x
  2. Step 2: Convert to fraction form
    2,980.24/4,112.96 = 1,654.20/x
  3. Step 3: Cross multiply
    2,980.24x = 4,112.96 × 1,654.20
  4. Step 4: Simplify right side
    2,980.24x = 6,803,658.43
  5. Step 5: Solve for x
    x = 6,803,658.43/2,980.24
  6. Step 6: Final answer
    x = 2,282.92

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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.