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Finding the Fourth Proportional to 5,718.09, 7,890.01 and 3,360.69

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Solution

The fourth proportional to 5,718.09, 7,890.01 and 3,360.69 is: 4,637.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,718.09 : 7,890.01 = 3,360.69 : x
  2. Step 2: Convert to fraction form
    5,718.09/7,890.01 = 3,360.69/x
  3. Step 3: Cross multiply
    5,718.09x = 7,890.01 × 3,360.69
  4. Step 4: Simplify right side
    5,718.09x = 26,515,877.71
  5. Step 5: Solve for x
    x = 26,515,877.71/5,718.09
  6. Step 6: Final answer
    x = 4,637.19

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Why These Related Problems?

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