Home / 8,720.04-13,047.64-5,211.92

Finding the Fourth Proportional to 8,720.04, 13,047.64 and 5,211.92

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Solution

The fourth proportional to 8,720.04, 13,047.64 and 5,211.92 is: 7,798.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,720.04 : 13,047.64 = 5,211.92 : x
  2. Step 2: Convert to fraction form
    8,720.04/13,047.64 = 5,211.92/x
  3. Step 3: Cross multiply
    8,720.04x = 13,047.64 × 5,211.92
  4. Step 4: Simplify right side
    8,720.04x = 68,003,255.87
  5. Step 5: Solve for x
    x = 68,003,255.87/8,720.04
  6. Step 6: Final answer
    x = 7,798.50

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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.