Home / 2,409.20-3,317.36-2,186.80

Finding the Fourth Proportional to 2,409.20, 3,317.36 and 2,186.80

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Solution

The fourth proportional to 2,409.20, 3,317.36 and 2,186.80 is: 3,011.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,409.20 : 3,317.36 = 2,186.80 : x
  2. Step 2: Convert to fraction form
    2,409.20/3,317.36 = 2,186.80/x
  3. Step 3: Cross multiply
    2,409.20x = 3,317.36 × 2,186.80
  4. Step 4: Simplify right side
    2,409.20x = 7,254,402.85
  5. Step 5: Solve for x
    x = 7,254,402.85/2,409.20
  6. Step 6: Final answer
    x = 3,011.13

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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.