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Finding the Fourth Proportional to 3,670.13, 5,505.19 and 1,478.84

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Solution

The fourth proportional to 3,670.13, 5,505.19 and 1,478.84 is: 2,218.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,670.13 : 5,505.19 = 1,478.84 : x
  2. Step 2: Convert to fraction form
    3,670.13/5,505.19 = 1,478.84/x
  3. Step 3: Cross multiply
    3,670.13x = 5,505.19 × 1,478.84
  4. Step 4: Simplify right side
    3,670.13x = 8,141,263.96
  5. Step 5: Solve for x
    x = 8,141,263.96/3,670.13
  6. Step 6: Final answer
    x = 2,218.25

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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.