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Finding the Fourth Proportional to 4,879.56, 7,320.48 and 1,416.72

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Solution

The fourth proportional to 4,879.56, 7,320.48 and 1,416.72 is: 2,125.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,879.56 : 7,320.48 = 1,416.72 : x
  2. Step 2: Convert to fraction form
    4,879.56/7,320.48 = 1,416.72/x
  3. Step 3: Cross multiply
    4,879.56x = 7,320.48 × 1,416.72
  4. Step 4: Simplify right side
    4,879.56x = 10,371,070.43
  5. Step 5: Solve for x
    x = 10,371,070.43/4,879.56
  6. Step 6: Final answer
    x = 2,125.41

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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.