Home / 8,720.85-12,035.78-5,184.03

Finding the Fourth Proportional to 8,720.85, 12,035.78 and 5,184.03

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Solution

The fourth proportional to 8,720.85, 12,035.78 and 5,184.03 is: 7,154.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,720.85 : 12,035.78 = 5,184.03 : x
  2. Step 2: Convert to fraction form
    8,720.85/12,035.78 = 5,184.03/x
  3. Step 3: Cross multiply
    8,720.85x = 12,035.78 × 5,184.03
  4. Step 4: Simplify right side
    8,720.85x = 62,393,844.59
  5. Step 5: Solve for x
    x = 62,393,844.59/8,720.85
  6. Step 6: Final answer
    x = 7,154.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.