Home / 2,087.04-3,130.32-1,220.64

Finding the Fourth Proportional to 2,087.04, 3,130.32 and 1,220.64

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Solution

The fourth proportional to 2,087.04, 3,130.32 and 1,220.64 is: 1,830.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,087.04 : 3,130.32 = 1,220.64 : x
  2. Step 2: Convert to fraction form
    2,087.04/3,130.32 = 1,220.64/x
  3. Step 3: Cross multiply
    2,087.04x = 3,130.32 × 1,220.64
  4. Step 4: Simplify right side
    2,087.04x = 3,820,993.80
  5. Step 5: Solve for x
    x = 3,820,993.80/2,087.04
  6. Step 6: Final answer
    x = 1,830.82

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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.