Home / 4,787.80-7,181.47-1,667.68

Finding the Fourth Proportional to 4,787.80, 7,181.47 and 1,667.68

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Solution

The fourth proportional to 4,787.80, 7,181.47 and 1,667.68 is: 2,501.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,787.80 : 7,181.47 = 1,667.68 : x
  2. Step 2: Convert to fraction form
    4,787.80/7,181.47 = 1,667.68/x
  3. Step 3: Cross multiply
    4,787.80x = 7,181.47 × 1,667.68
  4. Step 4: Simplify right side
    4,787.80x = 11,976,393.89
  5. Step 5: Solve for x
    x = 11,976,393.89/4,787.80
  6. Step 6: Final answer
    x = 2,501.44

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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.