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Finding the Fourth Proportional to 7,113.45, 10,670.17 and 1,919.32

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Solution

The fourth proportional to 7,113.45, 10,670.17 and 1,919.32 is: 2,878.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,113.45 : 10,670.17 = 1,919.32 : x
  2. Step 2: Convert to fraction form
    7,113.45/10,670.17 = 1,919.32/x
  3. Step 3: Cross multiply
    7,113.45x = 10,670.17 × 1,919.32
  4. Step 4: Simplify right side
    7,113.45x = 20,479,470.12
  5. Step 5: Solve for x
    x = 20,479,470.12/7,113.45
  6. Step 6: Final answer
    x = 2,878.98

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.