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Finding the Fourth Proportional to 7,099.84, 10,649.84 and 3,979.36

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Solution

The fourth proportional to 7,099.84, 10,649.84 and 3,979.36 is: 5,969.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,099.84 : 10,649.84 = 3,979.36 : x
  2. Step 2: Convert to fraction form
    7,099.84/10,649.84 = 3,979.36/x
  3. Step 3: Cross multiply
    7,099.84x = 10,649.84 × 3,979.36
  4. Step 4: Simplify right side
    7,099.84x = 42,379,547.30
  5. Step 5: Solve for x
    x = 42,379,547.30/7,099.84
  6. Step 6: Final answer
    x = 5,969.08

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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.