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Finding the Fourth Proportional to 7,293.60, 10,916.10 and 6,418.80

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Solution

The fourth proportional to 7,293.60, 10,916.10 and 6,418.80 is: 9,606.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,293.60 : 10,916.10 = 6,418.80 : x
  2. Step 2: Convert to fraction form
    7,293.60/10,916.10 = 6,418.80/x
  3. Step 3: Cross multiply
    7,293.60x = 10,916.10 × 6,418.80
  4. Step 4: Simplify right side
    7,293.60x = 70,068,262.68
  5. Step 5: Solve for x
    x = 70,068,262.68/7,293.60
  6. Step 6: Final answer
    x = 9,606.81

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1.5x scale

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.