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Finding the Fourth Proportional to 7,015.70, 10,518.15 and 3,937.70

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Solution

The fourth proportional to 7,015.70, 10,518.15 and 3,937.70 is: 5,903.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,015.70 : 10,518.15 = 3,937.70 : x
  2. Step 2: Convert to fraction form
    7,015.70/10,518.15 = 3,937.70/x
  3. Step 3: Cross multiply
    7,015.70x = 10,518.15 × 3,937.70
  4. Step 4: Simplify right side
    7,015.70x = 41,417,319.26
  5. Step 5: Solve for x
    x = 41,417,319.26/7,015.70
  6. Step 6: Final answer
    x = 5,903.52

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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.