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Finding the Fourth Proportional to 3,012.87, 4,518.88 and 934.30

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Solution

The fourth proportional to 3,012.87, 4,518.88 and 934.30 is: 1,401.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,012.87 : 4,518.88 = 934.30 : x
  2. Step 2: Convert to fraction form
    3,012.87/4,518.88 = 934.30/x
  3. Step 3: Cross multiply
    3,012.87x = 4,518.88 × 934.30
  4. Step 4: Simplify right side
    3,012.87x = 4,221,989.58
  5. Step 5: Solve for x
    x = 4,221,989.58/3,012.87
  6. Step 6: Final answer
    x = 1,401.32

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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.