Home / 3,120.74-4,656.54-3,015.03

Finding the Fourth Proportional to 3,120.74, 4,656.54 and 3,015.03

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Solution

The fourth proportional to 3,120.74, 4,656.54 and 3,015.03 is: 4,498.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,120.74 : 4,656.54 = 3,015.03 : x
  2. Step 2: Convert to fraction form
    3,120.74/4,656.54 = 3,015.03/x
  3. Step 3: Cross multiply
    3,120.74x = 4,656.54 × 3,015.03
  4. Step 4: Simplify right side
    3,120.74x = 14,039,607.80
  5. Step 5: Solve for x
    x = 14,039,607.80/3,120.74
  6. Step 6: Final answer
    x = 4,498.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.