Home / 2,927.40-4,039.80-1,808.07

Finding the Fourth Proportional to 2,927.40, 4,039.80 and 1,808.07

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Solution

The fourth proportional to 2,927.40, 4,039.80 and 1,808.07 is: 2,495.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,927.40 : 4,039.80 = 1,808.07 : x
  2. Step 2: Convert to fraction form
    2,927.40/4,039.80 = 1,808.07/x
  3. Step 3: Cross multiply
    2,927.40x = 4,039.80 × 1,808.07
  4. Step 4: Simplify right side
    2,927.40x = 7,304,241.19
  5. Step 5: Solve for x
    x = 7,304,241.19/2,927.40
  6. Step 6: Final answer
    x = 2,495.13

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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.