Home / 4,087.60-5,639.60-2,318.86

Finding the Fourth Proportional to 4,087.60, 5,639.60 and 2,318.86

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Solution

The fourth proportional to 4,087.60, 5,639.60 and 2,318.86 is: 3,199.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,087.60 : 5,639.60 = 2,318.86 : x
  2. Step 2: Convert to fraction form
    4,087.60/5,639.60 = 2,318.86/x
  3. Step 3: Cross multiply
    4,087.60x = 5,639.60 × 2,318.86
  4. Step 4: Simplify right side
    4,087.60x = 13,077,455.70
  5. Step 5: Solve for x
    x = 13,077,455.70/4,087.60
  6. Step 6: Final answer
    x = 3,199.30

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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.