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Finding the Fourth Proportional to 5,616.66, 8,424.99 and 1,918.92

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Solution

The fourth proportional to 5,616.66, 8,424.99 and 1,918.92 is: 2,878.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,616.66 : 8,424.99 = 1,918.92 : x
  2. Step 2: Convert to fraction form
    5,616.66/8,424.99 = 1,918.92/x
  3. Step 3: Cross multiply
    5,616.66x = 8,424.99 × 1,918.92
  4. Step 4: Simplify right side
    5,616.66x = 16,166,881.81
  5. Step 5: Solve for x
    x = 16,166,881.81/5,616.66
  6. Step 6: Final answer
    x = 2,878.38

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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.