Home / 8,518.60-12,778.53-2,971.27

Finding the Fourth Proportional to 8,518.60, 12,778.53 and 2,971.27

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Solution

The fourth proportional to 8,518.60, 12,778.53 and 2,971.27 is: 4,457.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,518.60 : 12,778.53 = 2,971.27 : x
  2. Step 2: Convert to fraction form
    8,518.60/12,778.53 = 2,971.27/x
  3. Step 3: Cross multiply
    8,518.60x = 12,778.53 × 2,971.27
  4. Step 4: Simplify right side
    8,518.60x = 37,968,462.83
  5. Step 5: Solve for x
    x = 37,968,462.83/8,518.60
  6. Step 6: Final answer
    x = 4,457.12

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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.