Home / 4,878.12-6,730.24-2,987.74

Finding the Fourth Proportional to 4,878.12, 6,730.24 and 2,987.74

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Solution

The fourth proportional to 4,878.12, 6,730.24 and 2,987.74 is: 4,122.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,878.12 : 6,730.24 = 2,987.74 : x
  2. Step 2: Convert to fraction form
    4,878.12/6,730.24 = 2,987.74/x
  3. Step 3: Cross multiply
    4,878.12x = 6,730.24 × 2,987.74
  4. Step 4: Simplify right side
    4,878.12x = 20,108,175.95
  5. Step 5: Solve for x
    x = 20,108,175.95/4,878.12
  6. Step 6: Final answer
    x = 4,122.11

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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.