Home / 8,720.28-13,085.28-3,526.56

Finding the Fourth Proportional to 8,720.28, 13,085.28 and 3,526.56

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Solution

The fourth proportional to 8,720.28, 13,085.28 and 3,526.56 is: 5,291.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,720.28 : 13,085.28 = 3,526.56 : x
  2. Step 2: Convert to fraction form
    8,720.28/13,085.28 = 3,526.56/x
  3. Step 3: Cross multiply
    8,720.28x = 13,085.28 × 3,526.56
  4. Step 4: Simplify right side
    8,720.28x = 46,146,025.04
  5. Step 5: Solve for x
    x = 46,146,025.04/8,720.28
  6. Step 6: Final answer
    x = 5,291.81

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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.