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Finding the Fourth Proportional to 2,392.64, 3,590.38 and 1,005.90

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Solution

The fourth proportional to 2,392.64, 3,590.38 and 1,005.90 is: 1,509.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,392.64 : 3,590.38 = 1,005.90 : x
  2. Step 2: Convert to fraction form
    2,392.64/3,590.38 = 1,005.90/x
  3. Step 3: Cross multiply
    2,392.64x = 3,590.38 × 1,005.90
  4. Step 4: Simplify right side
    2,392.64x = 3,611,563.24
  5. Step 5: Solve for x
    x = 3,611,563.24/2,392.64
  6. Step 6: Final answer
    x = 1,509.45

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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.