Home / 2,812.80-4,219.65-964.13

Finding the Fourth Proportional to 2,812.80, 4,219.65 and 964.13

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Solution

The fourth proportional to 2,812.80, 4,219.65 and 964.13 is: 1,446.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,812.80 : 4,219.65 = 964.13 : x
  2. Step 2: Convert to fraction form
    2,812.80/4,219.65 = 964.13/x
  3. Step 3: Cross multiply
    2,812.80x = 4,219.65 × 964.13
  4. Step 4: Simplify right side
    2,812.80x = 4,068,270.06
  5. Step 5: Solve for x
    x = 4,068,270.06/2,812.80
  6. Step 6: Final answer
    x = 1,446.34

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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.