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Finding the Fourth Proportional to 7,019.66, 10,520.39 and 2,854.80

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Solution

The fourth proportional to 7,019.66, 10,520.39 and 2,854.80 is: 4,278.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,019.66 : 10,520.39 = 2,854.80 : x
  2. Step 2: Convert to fraction form
    7,019.66/10,520.39 = 2,854.80/x
  3. Step 3: Cross multiply
    7,019.66x = 10,520.39 × 2,854.80
  4. Step 4: Simplify right side
    7,019.66x = 30,033,595.10
  5. Step 5: Solve for x
    x = 30,033,595.10/7,019.66
  6. Step 6: Final answer
    x = 4,278.50

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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.