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Finding the Fourth Proportional to 7,328.01, 10,112.64 and 3,970.92

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Solution

The fourth proportional to 7,328.01, 10,112.64 and 3,970.92 is: 5,479.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,328.01 : 10,112.64 = 3,970.92 : x
  2. Step 2: Convert to fraction form
    7,328.01/10,112.64 = 3,970.92/x
  3. Step 3: Cross multiply
    7,328.01x = 10,112.64 × 3,970.92
  4. Step 4: Simplify right side
    7,328.01x = 40,156,484.43
  5. Step 5: Solve for x
    x = 40,156,484.43/7,328.01
  6. Step 6: Final answer
    x = 5,479.86

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1.5x scale

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.