Home / 2,987.90-4,482.66-2,661.08

Finding the Fourth Proportional to 2,987.90, 4,482.66 and 2,661.08

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Solution

The fourth proportional to 2,987.90, 4,482.66 and 2,661.08 is: 3,992.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,987.90 : 4,482.66 = 2,661.08 : x
  2. Step 2: Convert to fraction form
    2,987.90/4,482.66 = 2,661.08/x
  3. Step 3: Cross multiply
    2,987.90x = 4,482.66 × 2,661.08
  4. Step 4: Simplify right side
    2,987.90x = 11,928,712.07
  5. Step 5: Solve for x
    x = 11,928,712.07/2,987.90
  6. Step 6: Final answer
    x = 3,992.34

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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.