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Finding the Fourth Proportional to 1,808.64, 2,710.80 and 1,424.16

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Solution

The fourth proportional to 1,808.64, 2,710.80 and 1,424.16 is: 2,134.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,808.64 : 2,710.80 = 1,424.16 : x
  2. Step 2: Convert to fraction form
    1,808.64/2,710.80 = 1,424.16/x
  3. Step 3: Cross multiply
    1,808.64x = 2,710.80 × 1,424.16
  4. Step 4: Simplify right side
    1,808.64x = 3,860,612.93
  5. Step 5: Solve for x
    x = 3,860,612.93/1,808.64
  6. Step 6: Final answer
    x = 2,134.54

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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.