Home / 4,409.21-6,612.23-1,288.40

Finding the Fourth Proportional to 4,409.21, 6,612.23 and 1,288.40

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Solution

The fourth proportional to 4,409.21, 6,612.23 and 1,288.40 is: 1,932.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,409.21 : 6,612.23 = 1,288.40 : x
  2. Step 2: Convert to fraction form
    4,409.21/6,612.23 = 1,288.40/x
  3. Step 3: Cross multiply
    4,409.21x = 6,612.23 × 1,288.40
  4. Step 4: Simplify right side
    4,409.21x = 8,519,157.63
  5. Step 5: Solve for x
    x = 8,519,157.63/4,409.21
  6. Step 6: Final answer
    x = 1,932.13

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Similar ratio
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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.