Home / 3,127.59-4,693.20-1,278.42

Finding the Fourth Proportional to 3,127.59, 4,693.20 and 1,278.42

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Solution

The fourth proportional to 3,127.59, 4,693.20 and 1,278.42 is: 1,918.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,127.59 : 4,693.20 = 1,278.42 : x
  2. Step 2: Convert to fraction form
    3,127.59/4,693.20 = 1,278.42/x
  3. Step 3: Cross multiply
    3,127.59x = 4,693.20 × 1,278.42
  4. Step 4: Simplify right side
    3,127.59x = 5,999,880.74
  5. Step 5: Solve for x
    x = 5,999,880.74/3,127.59
  6. Step 6: Final answer
    x = 1,918.37

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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.