Home / 2,987.16-4,467.63-2,660.40

Finding the Fourth Proportional to 2,987.16, 4,467.63 and 2,660.40

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Solution

The fourth proportional to 2,987.16, 4,467.63 and 2,660.40 is: 3,978.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,987.16 : 4,467.63 = 2,660.40 : x
  2. Step 2: Convert to fraction form
    2,987.16/4,467.63 = 2,660.40/x
  3. Step 3: Cross multiply
    2,987.16x = 4,467.63 × 2,660.40
  4. Step 4: Simplify right side
    2,987.16x = 11,885,676.07
  5. Step 5: Solve for x
    x = 11,885,676.07/2,987.16
  6. Step 6: Final answer
    x = 3,978.92

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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.