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Finding the Fourth Proportional to 1,867.04, 2,798.70 and 892

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Solution

The fourth proportional to 1,867.04, 2,798.70 and 892 is: 1,337.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,867.04 : 2,798.70 = 892 : x
  2. Step 2: Convert to fraction form
    1,867.04/2,798.70 = 892/x
  3. Step 3: Cross multiply
    1,867.04x = 2,798.70 × 892
  4. Step 4: Simplify right side
    1,867.04x = 2,496,440.40
  5. Step 5: Solve for x
    x = 2,496,440.40/1,867.04
  6. Step 6: Final answer
    x = 1,337.11

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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.