Home / 3,127.79-4,315.30-1,801.47

Finding the Fourth Proportional to 3,127.79, 4,315.30 and 1,801.47

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Solution

The fourth proportional to 3,127.79, 4,315.30 and 1,801.47 is: 2,485.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,127.79 : 4,315.30 = 1,801.47 : x
  2. Step 2: Convert to fraction form
    3,127.79/4,315.30 = 1,801.47/x
  3. Step 3: Cross multiply
    3,127.79x = 4,315.30 × 1,801.47
  4. Step 4: Simplify right side
    3,127.79x = 7,773,869.56
  5. Step 5: Solve for x
    x = 7,773,869.56/3,127.79
  6. Step 6: Final answer
    x = 2,485.42

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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.