Home / 1,377.73-2,056.56-1,276.21

Finding the Fourth Proportional to 1,377.73, 2,056.56 and 1,276.21

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Solution

The fourth proportional to 1,377.73, 2,056.56 and 1,276.21 is: 1,905.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,377.73 : 2,056.56 = 1,276.21 : x
  2. Step 2: Convert to fraction form
    1,377.73/2,056.56 = 1,276.21/x
  3. Step 3: Cross multiply
    1,377.73x = 2,056.56 × 1,276.21
  4. Step 4: Simplify right side
    1,377.73x = 2,624,602.44
  5. Step 5: Solve for x
    x = 2,624,602.44/1,377.73
  6. Step 6: Final answer
    x = 1,905.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.