Home / 8,543.20-12,812.40-2,701.60

Finding the Fourth Proportional to 8,543.20, 12,812.40 and 2,701.60

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Solution

The fourth proportional to 8,543.20, 12,812.40 and 2,701.60 is: 4,051.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,543.20 : 12,812.40 = 2,701.60 : x
  2. Step 2: Convert to fraction form
    8,543.20/12,812.40 = 2,701.60/x
  3. Step 3: Cross multiply
    8,543.20x = 12,812.40 × 2,701.60
  4. Step 4: Simplify right side
    8,543.20x = 34,613,979.84
  5. Step 5: Solve for x
    x = 34,613,979.84/8,543.20
  6. Step 6: Final answer
    x = 4,051.64

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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.