Home / 2,987.04-4,120.93-1,727.87

Finding the Fourth Proportional to 2,987.04, 4,120.93 and 1,727.87

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Solution

The fourth proportional to 2,987.04, 4,120.93 and 1,727.87 is: 2,383.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,987.04 : 4,120.93 = 1,727.87 : x
  2. Step 2: Convert to fraction form
    2,987.04/4,120.93 = 1,727.87/x
  3. Step 3: Cross multiply
    2,987.04x = 4,120.93 × 1,727.87
  4. Step 4: Simplify right side
    2,987.04x = 7,120,406.39
  5. Step 5: Solve for x
    x = 7,120,406.39/2,987.04
  6. Step 6: Final answer
    x = 2,383.77

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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.