Home / 9,145.12-12,630.68-6,155.76

Finding the Fourth Proportional to 9,145.12, 12,630.68 and 6,155.76

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Solution

The fourth proportional to 9,145.12, 12,630.68 and 6,155.76 is: 8,501.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,145.12 : 12,630.68 = 6,155.76 : x
  2. Step 2: Convert to fraction form
    9,145.12/12,630.68 = 6,155.76/x
  3. Step 3: Cross multiply
    9,145.12x = 12,630.68 × 6,155.76
  4. Step 4: Simplify right side
    9,145.12x = 77,751,403.94
  5. Step 5: Solve for x
    x = 77,751,403.94/9,145.12
  6. Step 6: Final answer
    x = 8,501.96

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Double scale
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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.