Home / 3,127.36-4,315.80-1,801.30

Finding the Fourth Proportional to 3,127.36, 4,315.80 and 1,801.30

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Solution

The fourth proportional to 3,127.36, 4,315.80 and 1,801.30 is: 2,485.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,127.36 : 4,315.80 = 1,801.30 : x
  2. Step 2: Convert to fraction form
    3,127.36/4,315.80 = 1,801.30/x
  3. Step 3: Cross multiply
    3,127.36x = 4,315.80 × 1,801.30
  4. Step 4: Simplify right side
    3,127.36x = 7,774,050.54
  5. Step 5: Solve for x
    x = 7,774,050.54/3,127.36
  6. Step 6: Final answer
    x = 2,485.82

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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.