Home / 1,601.28-2,209.86-1,011.60

Finding the Fourth Proportional to 1,601.28, 2,209.86 and 1,011.60

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Solution

The fourth proportional to 1,601.28, 2,209.86 and 1,011.60 is: 1,396.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,601.28 : 2,209.86 = 1,011.60 : x
  2. Step 2: Convert to fraction form
    1,601.28/2,209.86 = 1,011.60/x
  3. Step 3: Cross multiply
    1,601.28x = 2,209.86 × 1,011.60
  4. Step 4: Simplify right side
    1,601.28x = 2,235,494.38
  5. Step 5: Solve for x
    x = 2,235,494.38/1,601.28
  6. Step 6: Final answer
    x = 1,396.07

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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.