Home / 6,439.60-9,659.40-2,543.50

Finding the Fourth Proportional to 6,439.60, 9,659.40 and 2,543.50

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Solution

The fourth proportional to 6,439.60, 9,659.40 and 2,543.50 is: 3,815.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,439.60 : 9,659.40 = 2,543.50 : x
  2. Step 2: Convert to fraction form
    6,439.60/9,659.40 = 2,543.50/x
  3. Step 3: Cross multiply
    6,439.60x = 9,659.40 × 2,543.50
  4. Step 4: Simplify right side
    6,439.60x = 24,568,683.90
  5. Step 5: Solve for x
    x = 24,568,683.90/6,439.60
  6. Step 6: Final answer
    x = 3,815.25

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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.