Home / 3,056.40-4,218.30-1,878.30

Finding the Fourth Proportional to 3,056.40, 4,218.30 and 1,878.30

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Solution

The fourth proportional to 3,056.40, 4,218.30 and 1,878.30 is: 2,592.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,056.40 : 4,218.30 = 1,878.30 : x
  2. Step 2: Convert to fraction form
    3,056.40/4,218.30 = 1,878.30/x
  3. Step 3: Cross multiply
    3,056.40x = 4,218.30 × 1,878.30
  4. Step 4: Simplify right side
    3,056.40x = 7,923,232.89
  5. Step 5: Solve for x
    x = 7,923,232.89/3,056.40
  6. Step 6: Final answer
    x = 2,592.34

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1.5x scale

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.