Home / 2,980.40-4,112.47-1,654.07

Finding the Fourth Proportional to 2,980.40, 4,112.47 and 1,654.07

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Solution

The fourth proportional to 2,980.40, 4,112.47 and 1,654.07 is: 2,282.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,980.40 : 4,112.47 = 1,654.07 : x
  2. Step 2: Convert to fraction form
    2,980.40/4,112.47 = 1,654.07/x
  3. Step 3: Cross multiply
    2,980.40x = 4,112.47 × 1,654.07
  4. Step 4: Simplify right side
    2,980.40x = 6,802,317.89
  5. Step 5: Solve for x
    x = 6,802,317.89/2,980.40
  6. Step 6: Final answer
    x = 2,282.35

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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.