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Finding the Fourth Proportional to 3,070.85, 4,607.07 and 879.74

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Solution

The fourth proportional to 3,070.85, 4,607.07 and 879.74 is: 1,319.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,070.85 : 4,607.07 = 879.74 : x
  2. Step 2: Convert to fraction form
    3,070.85/4,607.07 = 879.74/x
  3. Step 3: Cross multiply
    3,070.85x = 4,607.07 × 879.74
  4. Step 4: Simplify right side
    3,070.85x = 4,053,023.76
  5. Step 5: Solve for x
    x = 4,053,023.76/3,070.85
  6. Step 6: Final answer
    x = 1,319.84

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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.