Home / 3,405.28-4,698.94-1,988.60

Finding the Fourth Proportional to 3,405.28, 4,698.94 and 1,988.60

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Solution

The fourth proportional to 3,405.28, 4,698.94 and 1,988.60 is: 2,744.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,405.28 : 4,698.94 = 1,988.60 : x
  2. Step 2: Convert to fraction form
    3,405.28/4,698.94 = 1,988.60/x
  3. Step 3: Cross multiply
    3,405.28x = 4,698.94 × 1,988.60
  4. Step 4: Simplify right side
    3,405.28x = 9,344,312.08
  5. Step 5: Solve for x
    x = 9,344,312.08/3,405.28
  6. Step 6: Final answer
    x = 2,744.07

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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.