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Finding the Fourth Proportional to 5,876.12, 8,814.21 and 1,980.56

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Solution

The fourth proportional to 5,876.12, 8,814.21 and 1,980.56 is: 2,970.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,876.12 : 8,814.21 = 1,980.56 : x
  2. Step 2: Convert to fraction form
    5,876.12/8,814.21 = 1,980.56/x
  3. Step 3: Cross multiply
    5,876.12x = 8,814.21 × 1,980.56
  4. Step 4: Simplify right side
    5,876.12x = 17,457,071.76
  5. Step 5: Solve for x
    x = 17,457,071.76/5,876.12
  6. Step 6: Final answer
    x = 2,970.85

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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.