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Finding the Fourth Proportional to 2,356.72, 3,250.92 and 1,528.72

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Solution

The fourth proportional to 2,356.72, 3,250.92 and 1,528.72 is: 2,108.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,356.72 : 3,250.92 = 1,528.72 : x
  2. Step 2: Convert to fraction form
    2,356.72/3,250.92 = 1,528.72/x
  3. Step 3: Cross multiply
    2,356.72x = 3,250.92 × 1,528.72
  4. Step 4: Simplify right side
    2,356.72x = 4,969,746.42
  5. Step 5: Solve for x
    x = 4,969,746.42/2,356.72
  6. Step 6: Final answer
    x = 2,108.76

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.