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Finding the Fourth Proportional to 6,913.32, 10,369.98 and 1,719.20

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Solution

The fourth proportional to 6,913.32, 10,369.98 and 1,719.20 is: 2,578.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,913.32 : 10,369.98 = 1,719.20 : x
  2. Step 2: Convert to fraction form
    6,913.32/10,369.98 = 1,719.20/x
  3. Step 3: Cross multiply
    6,913.32x = 10,369.98 × 1,719.20
  4. Step 4: Simplify right side
    6,913.32x = 17,828,017.77
  5. Step 5: Solve for x
    x = 17,828,017.77/6,913.32
  6. Step 6: Final answer
    x = 2,578.79

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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.