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Finding the Fourth Proportional to 7,572.14, 10,448 and 4,427.72

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Solution

The fourth proportional to 7,572.14, 10,448 and 4,427.72 is: 6,109.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,572.14 : 10,448 = 4,427.72 : x
  2. Step 2: Convert to fraction form
    7,572.14/10,448 = 4,427.72/x
  3. Step 3: Cross multiply
    7,572.14x = 10,448 × 4,427.72
  4. Step 4: Simplify right side
    7,572.14x = 46,260,818.56
  5. Step 5: Solve for x
    x = 46,260,818.56/7,572.14
  6. Step 6: Final answer
    x = 6,109.35

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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.