Home / 3,206.40-4,425.84-1,880.64

Finding the Fourth Proportional to 3,206.40, 4,425.84 and 1,880.64

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Solution

The fourth proportional to 3,206.40, 4,425.84 and 1,880.64 is: 2,595.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,206.40 : 4,425.84 = 1,880.64 : x
  2. Step 2: Convert to fraction form
    3,206.40/4,425.84 = 1,880.64/x
  3. Step 3: Cross multiply
    3,206.40x = 4,425.84 × 1,880.64
  4. Step 4: Simplify right side
    3,206.40x = 8,323,411.74
  5. Step 5: Solve for x
    x = 8,323,411.74/3,206.40
  6. Step 6: Final answer
    x = 2,595.87

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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.