Home / 2,905.90-4,008.08-1,787.47

Finding the Fourth Proportional to 2,905.90, 4,008.08 and 1,787.47

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Solution

The fourth proportional to 2,905.90, 4,008.08 and 1,787.47 is: 2,465.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,905.90 : 4,008.08 = 1,787.47 : x
  2. Step 2: Convert to fraction form
    2,905.90/4,008.08 = 1,787.47/x
  3. Step 3: Cross multiply
    2,905.90x = 4,008.08 × 1,787.47
  4. Step 4: Simplify right side
    2,905.90x = 7,164,322.76
  5. Step 5: Solve for x
    x = 7,164,322.76/2,905.90
  6. Step 6: Final answer
    x = 2,465.44

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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.