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Finding the Fourth Proportional to 2,392.47, 3,588.60 and 661.05

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Solution

The fourth proportional to 2,392.47, 3,588.60 and 661.05 is: 991.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,392.47 : 3,588.60 = 661.05 : x
  2. Step 2: Convert to fraction form
    2,392.47/3,588.60 = 661.05/x
  3. Step 3: Cross multiply
    2,392.47x = 3,588.60 × 661.05
  4. Step 4: Simplify right side
    2,392.47x = 2,372,244.03
  5. Step 5: Solve for x
    x = 2,372,244.03/2,392.47
  6. Step 6: Final answer
    x = 991.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.