Home / 7,485.12-11,248.20-6,997.50

Finding the Fourth Proportional to 7,485.12, 11,248.20 and 6,997.50

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Solution

The fourth proportional to 7,485.12, 11,248.20 and 6,997.50 is: 10,515.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,485.12 : 11,248.20 = 6,997.50 : x
  2. Step 2: Convert to fraction form
    7,485.12/11,248.20 = 6,997.50/x
  3. Step 3: Cross multiply
    7,485.12x = 11,248.20 × 6,997.50
  4. Step 4: Simplify right side
    7,485.12x = 78,709,279.50
  5. Step 5: Solve for x
    x = 78,709,279.50/7,485.12
  6. Step 6: Final answer
    x = 10,515.43

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Half scale
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Double scale
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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.