Home / 1,905.38-2,627.52-1,434.40

Finding the Fourth Proportional to 1,905.38, 2,627.52 and 1,434.40

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Solution

The fourth proportional to 1,905.38, 2,627.52 and 1,434.40 is: 1,978.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,905.38 : 2,627.52 = 1,434.40 : x
  2. Step 2: Convert to fraction form
    1,905.38/2,627.52 = 1,434.40/x
  3. Step 3: Cross multiply
    1,905.38x = 2,627.52 × 1,434.40
  4. Step 4: Simplify right side
    1,905.38x = 3,768,914.69
  5. Step 5: Solve for x
    x = 3,768,914.69/1,905.38
  6. Step 6: Final answer
    x = 1,978.04

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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.