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Finding the Fourth Proportional to 1,571.82, 2,357.72 and 802.86

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Solution

The fourth proportional to 1,571.82, 2,357.72 and 802.86 is: 1,204.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,571.82 : 2,357.72 = 802.86 : x
  2. Step 2: Convert to fraction form
    1,571.82/2,357.72 = 802.86/x
  3. Step 3: Cross multiply
    1,571.82x = 2,357.72 × 802.86
  4. Step 4: Simplify right side
    1,571.82x = 1,892,919.08
  5. Step 5: Solve for x
    x = 1,892,919.08/1,571.82
  6. Step 6: Final answer
    x = 1,204.28

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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.