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Finding the Fourth Proportional to 1,576.64, 2,364.96 and 1,291.52

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Solution

The fourth proportional to 1,576.64, 2,364.96 and 1,291.52 is: 1,937.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,576.64 : 2,364.96 = 1,291.52 : x
  2. Step 2: Convert to fraction form
    1,576.64/2,364.96 = 1,291.52/x
  3. Step 3: Cross multiply
    1,576.64x = 2,364.96 × 1,291.52
  4. Step 4: Simplify right side
    1,576.64x = 3,054,393.14
  5. Step 5: Solve for x
    x = 3,054,393.14/1,576.64
  6. Step 6: Final answer
    x = 1,937.28

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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.