Home / 3,609.28-4,981.20-3,386.80

Finding the Fourth Proportional to 3,609.28, 4,981.20 and 3,386.80

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Solution

The fourth proportional to 3,609.28, 4,981.20 and 3,386.80 is: 4,674.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,609.28 : 4,981.20 = 3,386.80 : x
  2. Step 2: Convert to fraction form
    3,609.28/4,981.20 = 3,386.80/x
  3. Step 3: Cross multiply
    3,609.28x = 4,981.20 × 3,386.80
  4. Step 4: Simplify right side
    3,609.28x = 16,870,328.16
  5. Step 5: Solve for x
    x = 16,870,328.16/3,609.28
  6. Step 6: Final answer
    x = 4,674.15

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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.