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Finding the Fourth Proportional to 7,007.40, 10,515.90 and 3,114.60

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Solution

The fourth proportional to 7,007.40, 10,515.90 and 3,114.60 is: 4,674.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,007.40 : 10,515.90 = 3,114.60 : x
  2. Step 2: Convert to fraction form
    7,007.40/10,515.90 = 3,114.60/x
  3. Step 3: Cross multiply
    7,007.40x = 10,515.90 × 3,114.60
  4. Step 4: Simplify right side
    7,007.40x = 32,752,822.14
  5. Step 5: Solve for x
    x = 32,752,822.14/7,007.40
  6. Step 6: Final answer
    x = 4,674.03

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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.