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Finding the Fourth Proportional to 7,008.99, 10,515.51 and 2,078.74

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Solution

The fourth proportional to 7,008.99, 10,515.51 and 2,078.74 is: 3,118.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,008.99 : 10,515.51 = 2,078.74 : x
  2. Step 2: Convert to fraction form
    7,008.99/10,515.51 = 2,078.74/x
  3. Step 3: Cross multiply
    7,008.99x = 10,515.51 × 2,078.74
  4. Step 4: Simplify right side
    7,008.99x = 21,859,011.26
  5. Step 5: Solve for x
    x = 21,859,011.26/7,008.99
  6. Step 6: Final answer
    x = 3,118.71

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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.