Home / 7,143.10-9,861.18-4,455.16

Finding the Fourth Proportional to 7,143.10, 9,861.18 and 4,455.16

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Solution

The fourth proportional to 7,143.10, 9,861.18 and 4,455.16 is: 6,150.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,143.10 : 9,861.18 = 4,455.16 : x
  2. Step 2: Convert to fraction form
    7,143.10/9,861.18 = 4,455.16/x
  3. Step 3: Cross multiply
    7,143.10x = 9,861.18 × 4,455.16
  4. Step 4: Simplify right side
    7,143.10x = 43,933,134.69
  5. Step 5: Solve for x
    x = 43,933,134.69/7,143.10
  6. Step 6: Final answer
    x = 6,150.43

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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.