Home / 2,215.60-3,056.88-1,376.96

Finding the Fourth Proportional to 2,215.60, 3,056.88 and 1,376.96

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Solution

The fourth proportional to 2,215.60, 3,056.88 and 1,376.96 is: 1,899.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,215.60 : 3,056.88 = 1,376.96 : x
  2. Step 2: Convert to fraction form
    2,215.60/3,056.88 = 1,376.96/x
  3. Step 3: Cross multiply
    2,215.60x = 3,056.88 × 1,376.96
  4. Step 4: Simplify right side
    2,215.60x = 4,209,201.48
  5. Step 5: Solve for x
    x = 4,209,201.48/2,215.60
  6. Step 6: Final answer
    x = 1,899.80

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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.