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Finding the Fourth Proportional to 7,150.56, 9,867.68 and 4,006.72

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Solution

The fourth proportional to 7,150.56, 9,867.68 and 4,006.72 is: 5,529.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,150.56 : 9,867.68 = 4,006.72 : x
  2. Step 2: Convert to fraction form
    7,150.56/9,867.68 = 4,006.72/x
  3. Step 3: Cross multiply
    7,150.56x = 9,867.68 × 4,006.72
  4. Step 4: Simplify right side
    7,150.56x = 39,537,030.81
  5. Step 5: Solve for x
    x = 39,537,030.81/7,150.56
  6. Step 6: Final answer
    x = 5,529.22

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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.