Home / 1,939.34-2,677.56-1,277.32

Finding the Fourth Proportional to 1,939.34, 2,677.56 and 1,277.32

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Solution

The fourth proportional to 1,939.34, 2,677.56 and 1,277.32 is: 1,763.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,939.34 : 2,677.56 = 1,277.32 : x
  2. Step 2: Convert to fraction form
    1,939.34/2,677.56 = 1,277.32/x
  3. Step 3: Cross multiply
    1,939.34x = 2,677.56 × 1,277.32
  4. Step 4: Simplify right side
    1,939.34x = 3,420,094.48
  5. Step 5: Solve for x
    x = 3,420,094.48/1,939.34
  6. Step 6: Final answer
    x = 1,763.53

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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.