Home / 8,720.23-13,080.15-2,146.48

Finding the Fourth Proportional to 8,720.23, 13,080.15 and 2,146.48

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Solution

The fourth proportional to 8,720.23, 13,080.15 and 2,146.48 is: 3,219.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,720.23 : 13,080.15 = 2,146.48 : x
  2. Step 2: Convert to fraction form
    8,720.23/13,080.15 = 2,146.48/x
  3. Step 3: Cross multiply
    8,720.23x = 13,080.15 × 2,146.48
  4. Step 4: Simplify right side
    8,720.23x = 28,076,280.37
  5. Step 5: Solve for x
    x = 28,076,280.37/8,720.23
  6. Step 6: Final answer
    x = 3,219.67

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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.