Home / 3,120.93-4,681.40-1,272.06

Finding the Fourth Proportional to 3,120.93, 4,681.40 and 1,272.06

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Solution

The fourth proportional to 3,120.93, 4,681.40 and 1,272.06 is: 1,908.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,120.93 : 4,681.40 = 1,272.06 : x
  2. Step 2: Convert to fraction form
    3,120.93/4,681.40 = 1,272.06/x
  3. Step 3: Cross multiply
    3,120.93x = 4,681.40 × 1,272.06
  4. Step 4: Simplify right side
    3,120.93x = 5,955,015.32
  5. Step 5: Solve for x
    x = 5,955,015.32/3,120.93
  6. Step 6: Final answer
    x = 1,908.09

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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.