Home / 8,518.34-12,777.57-2,971.79

Finding the Fourth Proportional to 8,518.34, 12,777.57 and 2,971.79

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Solution

The fourth proportional to 8,518.34, 12,777.57 and 2,971.79 is: 4,457.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,518.34 : 12,777.57 = 2,971.79 : x
  2. Step 2: Convert to fraction form
    8,518.34/12,777.57 = 2,971.79/x
  3. Step 3: Cross multiply
    8,518.34x = 12,777.57 × 2,971.79
  4. Step 4: Simplify right side
    8,518.34x = 37,972,190.86
  5. Step 5: Solve for x
    x = 37,972,190.86/8,518.34
  6. Step 6: Final answer
    x = 4,457.70

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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.