Home / 9,085.28-13,628.64-2,421.80

Finding the Fourth Proportional to 9,085.28, 13,628.64 and 2,421.80

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Solution

The fourth proportional to 9,085.28, 13,628.64 and 2,421.80 is: 3,632.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,085.28 : 13,628.64 = 2,421.80 : x
  2. Step 2: Convert to fraction form
    9,085.28/13,628.64 = 2,421.80/x
  3. Step 3: Cross multiply
    9,085.28x = 13,628.64 × 2,421.80
  4. Step 4: Simplify right side
    9,085.28x = 33,005,772.21
  5. Step 5: Solve for x
    x = 33,005,772.21/9,085.28
  6. Step 6: Final answer
    x = 3,632.89

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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.