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Finding the Fourth Proportional to 7,312.81, 10,958.68 and 5,661.63

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Solution

The fourth proportional to 7,312.81, 10,958.68 and 5,661.63 is: 8,484.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,312.81 : 10,958.68 = 5,661.63 : x
  2. Step 2: Convert to fraction form
    7,312.81/10,958.68 = 5,661.63/x
  3. Step 3: Cross multiply
    7,312.81x = 10,958.68 × 5,661.63
  4. Step 4: Simplify right side
    7,312.81x = 62,043,991.45
  5. Step 5: Solve for x
    x = 62,043,991.45/7,312.81
  6. Step 6: Final answer
    x = 8,484.29

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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.