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Finding the Fourth Proportional to 7,149.63, 10,724.58 and 1,955.51

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Solution

The fourth proportional to 7,149.63, 10,724.58 and 1,955.51 is: 2,933.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,149.63 : 10,724.58 = 1,955.51 : x
  2. Step 2: Convert to fraction form
    7,149.63/10,724.58 = 1,955.51/x
  3. Step 3: Cross multiply
    7,149.63x = 10,724.58 × 1,955.51
  4. Step 4: Simplify right side
    7,149.63x = 20,971,969.81
  5. Step 5: Solve for x
    x = 20,971,969.81/7,149.63
  6. Step 6: Final answer
    x = 2,933.29

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Similar ratio
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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.