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Finding the Fourth Proportional to 7,160.76, 9,879.12 and 4,175.46

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Solution

The fourth proportional to 7,160.76, 9,879.12 and 4,175.46 is: 5,760.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,160.76 : 9,879.12 = 4,175.46 : x
  2. Step 2: Convert to fraction form
    7,160.76/9,879.12 = 4,175.46/x
  3. Step 3: Cross multiply
    7,160.76x = 9,879.12 × 4,175.46
  4. Step 4: Simplify right side
    7,160.76x = 41,249,870.40
  5. Step 5: Solve for x
    x = 41,249,870.40/7,160.76
  6. Step 6: Final answer
    x = 5,760.54

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Half scale
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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.