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Finding the Fourth Proportional to 2,896.79, 4,345.11 and 705.51

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Solution

The fourth proportional to 2,896.79, 4,345.11 and 705.51 is: 1,058.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,896.79 : 4,345.11 = 705.51 : x
  2. Step 2: Convert to fraction form
    2,896.79/4,345.11 = 705.51/x
  3. Step 3: Cross multiply
    2,896.79x = 4,345.11 × 705.51
  4. Step 4: Simplify right side
    2,896.79x = 3,065,518.56
  5. Step 5: Solve for x
    x = 3,065,518.56/2,896.79
  6. Step 6: Final answer
    x = 1,058.25

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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.