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Finding the Fourth Proportional to 1,260.32, 1,746.74 and 1,241.60

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Solution

The fourth proportional to 1,260.32, 1,746.74 and 1,241.60 is: 1,720.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,260.32 : 1,746.74 = 1,241.60 : x
  2. Step 2: Convert to fraction form
    1,260.32/1,746.74 = 1,241.60/x
  3. Step 3: Cross multiply
    1,260.32x = 1,746.74 × 1,241.60
  4. Step 4: Simplify right side
    1,260.32x = 2,168,752.38
  5. Step 5: Solve for x
    x = 2,168,752.38/1,260.32
  6. Step 6: Final answer
    x = 1,720.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.