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Finding the Fourth Proportional to 4,720.05, 7,080.12 and 1,798.65

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Solution

The fourth proportional to 4,720.05, 7,080.12 and 1,798.65 is: 2,697.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,720.05 : 7,080.12 = 1,798.65 : x
  2. Step 2: Convert to fraction form
    4,720.05/7,080.12 = 1,798.65/x
  3. Step 3: Cross multiply
    4,720.05x = 7,080.12 × 1,798.65
  4. Step 4: Simplify right side
    4,720.05x = 12,734,657.84
  5. Step 5: Solve for x
    x = 12,734,657.84/4,720.05
  6. Step 6: Final answer
    x = 2,697.99

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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.