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Finding the Fourth Proportional to 7,392.51, 11,079.45 and 6,465.87

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Solution

The fourth proportional to 7,392.51, 11,079.45 and 6,465.87 is: 9,690.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,392.51 : 11,079.45 = 6,465.87 : x
  2. Step 2: Convert to fraction form
    7,392.51/11,079.45 = 6,465.87/x
  3. Step 3: Cross multiply
    7,392.51x = 11,079.45 × 6,465.87
  4. Step 4: Simplify right side
    7,392.51x = 71,638,283.37
  5. Step 5: Solve for x
    x = 71,638,283.37/7,392.51
  6. Step 6: Final answer
    x = 9,690.66

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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.