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Finding the Fourth Proportional to 1,712.16, 2,567.06 and 879.72

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Solution

The fourth proportional to 1,712.16, 2,567.06 and 879.72 is: 1,318.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,712.16 : 2,567.06 = 879.72 : x
  2. Step 2: Convert to fraction form
    1,712.16/2,567.06 = 879.72/x
  3. Step 3: Cross multiply
    1,712.16x = 2,567.06 × 879.72
  4. Step 4: Simplify right side
    1,712.16x = 2,258,294.02
  5. Step 5: Solve for x
    x = 2,258,294.02/1,712.16
  6. Step 6: Final answer
    x = 1,318.97

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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.