Home / 1,377.40-2,054.15-1,173.28

Finding the Fourth Proportional to 1,377.40, 2,054.15 and 1,173.28

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Solution

The fourth proportional to 1,377.40, 2,054.15 and 1,173.28 is: 1,749.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,377.40 : 2,054.15 = 1,173.28 : x
  2. Step 2: Convert to fraction form
    1,377.40/2,054.15 = 1,173.28/x
  3. Step 3: Cross multiply
    1,377.40x = 2,054.15 × 1,173.28
  4. Step 4: Simplify right side
    1,377.40x = 2,410,093.11
  5. Step 5: Solve for x
    x = 2,410,093.11/1,377.40
  6. Step 6: Final answer
    x = 1,749.74

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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.