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Finding the Fourth Proportional to 7,155.96, 9,875.18 and 4,012.14

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Solution

The fourth proportional to 7,155.96, 9,875.18 and 4,012.14 is: 5,536.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,155.96 : 9,875.18 = 4,012.14 : x
  2. Step 2: Convert to fraction form
    7,155.96/9,875.18 = 4,012.14/x
  3. Step 3: Cross multiply
    7,155.96x = 9,875.18 × 4,012.14
  4. Step 4: Simplify right side
    7,155.96x = 39,620,604.69
  5. Step 5: Solve for x
    x = 39,620,604.69/7,155.96
  6. Step 6: Final answer
    x = 5,536.73

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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.