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Finding the Fourth Proportional to 5,315.56, 7,335.42 and 2,957.66

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Solution

The fourth proportional to 5,315.56, 7,335.42 and 2,957.66 is: 4,081.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,315.56 : 7,335.42 = 2,957.66 : x
  2. Step 2: Convert to fraction form
    5,315.56/7,335.42 = 2,957.66/x
  3. Step 3: Cross multiply
    5,315.56x = 7,335.42 × 2,957.66
  4. Step 4: Simplify right side
    5,315.56x = 21,695,678.32
  5. Step 5: Solve for x
    x = 21,695,678.32/5,315.56
  6. Step 6: Final answer
    x = 4,081.54

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.