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Finding the Fourth Proportional to 3,074.57, 4,242.90 and 1,677.32

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Solution

The fourth proportional to 3,074.57, 4,242.90 and 1,677.32 is: 2,314.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,074.57 : 4,242.90 = 1,677.32 : x
  2. Step 2: Convert to fraction form
    3,074.57/4,242.90 = 1,677.32/x
  3. Step 3: Cross multiply
    3,074.57x = 4,242.90 × 1,677.32
  4. Step 4: Simplify right side
    3,074.57x = 7,116,671.43
  5. Step 5: Solve for x
    x = 7,116,671.43/3,074.57
  6. Step 6: Final answer
    x = 2,314.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.