Home / 2,787.58-4,181.40-1,142.98

Finding the Fourth Proportional to 2,787.58, 4,181.40 and 1,142.98

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Solution

The fourth proportional to 2,787.58, 4,181.40 and 1,142.98 is: 1,714.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,787.58 : 4,181.40 = 1,142.98 : x
  2. Step 2: Convert to fraction form
    2,787.58/4,181.40 = 1,142.98/x
  3. Step 3: Cross multiply
    2,787.58x = 4,181.40 × 1,142.98
  4. Step 4: Simplify right side
    2,787.58x = 4,779,256.57
  5. Step 5: Solve for x
    x = 4,779,256.57/2,787.58
  6. Step 6: Final answer
    x = 1,714.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.