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Finding the Fourth Proportional to 7,371.81, 11,014.65 and 7,113.48

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Solution

The fourth proportional to 7,371.81, 11,014.65 and 7,113.48 is: 10,628.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,371.81 : 11,014.65 = 7,113.48 : x
  2. Step 2: Convert to fraction form
    7,371.81/11,014.65 = 7,113.48/x
  3. Step 3: Cross multiply
    7,371.81x = 11,014.65 × 7,113.48
  4. Step 4: Simplify right side
    7,371.81x = 78,352,492.48
  5. Step 5: Solve for x
    x = 78,352,492.48/7,371.81
  6. Step 6: Final answer
    x = 10,628.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.