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Finding the Fourth Proportional to 3,807.72, 5,711.54 and 2,888.92

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Solution

The fourth proportional to 3,807.72, 5,711.54 and 2,888.92 is: 4,333.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,807.72 : 5,711.54 = 2,888.92 : x
  2. Step 2: Convert to fraction form
    3,807.72/5,711.54 = 2,888.92/x
  3. Step 3: Cross multiply
    3,807.72x = 5,711.54 × 2,888.92
  4. Step 4: Simplify right side
    3,807.72x = 16,500,182.14
  5. Step 5: Solve for x
    x = 16,500,182.14/3,807.72
  6. Step 6: Final answer
    x = 4,333.35

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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.