Home / 1,364.40-2,056.65-1,331.60

Finding the Fourth Proportional to 1,364.40, 2,056.65 and 1,331.60

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Solution

The fourth proportional to 1,364.40, 2,056.65 and 1,331.60 is: 2,007.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,364.40 : 2,056.65 = 1,331.60 : x
  2. Step 2: Convert to fraction form
    1,364.40/2,056.65 = 1,331.60/x
  3. Step 3: Cross multiply
    1,364.40x = 2,056.65 × 1,331.60
  4. Step 4: Simplify right side
    1,364.40x = 2,738,635.14
  5. Step 5: Solve for x
    x = 2,738,635.14/1,364.40
  6. Step 6: Final answer
    x = 2,007.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.