Home / 4,878.90-7,318.08-2,104.20

Finding the Fourth Proportional to 4,878.90, 7,318.08 and 2,104.20

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Solution

The fourth proportional to 4,878.90, 7,318.08 and 2,104.20 is: 3,156.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,878.90 : 7,318.08 = 2,104.20 : x
  2. Step 2: Convert to fraction form
    4,878.90/7,318.08 = 2,104.20/x
  3. Step 3: Cross multiply
    4,878.90x = 7,318.08 × 2,104.20
  4. Step 4: Simplify right side
    4,878.90x = 15,398,703.94
  5. Step 5: Solve for x
    x = 15,398,703.94/4,878.90
  6. Step 6: Final answer
    x = 3,156.18

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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.