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Finding the Fourth Proportional to 1,893.66, 2,840.28 and 507.11

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Solution

The fourth proportional to 1,893.66, 2,840.28 and 507.11 is: 760.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,893.66 : 2,840.28 = 507.11 : x
  2. Step 2: Convert to fraction form
    1,893.66/2,840.28 = 507.11/x
  3. Step 3: Cross multiply
    1,893.66x = 2,840.28 × 507.11
  4. Step 4: Simplify right side
    1,893.66x = 1,440,334.39
  5. Step 5: Solve for x
    x = 1,440,334.39/1,893.66
  6. Step 6: Final answer
    x = 760.61

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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.