Home / 5,418.90-8,128.35-4,706.10

Finding the Fourth Proportional to 5,418.90, 8,128.35 and 4,706.10

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Solution

The fourth proportional to 5,418.90, 8,128.35 and 4,706.10 is: 7,059.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,418.90 : 8,128.35 = 4,706.10 : x
  2. Step 2: Convert to fraction form
    5,418.90/8,128.35 = 4,706.10/x
  3. Step 3: Cross multiply
    5,418.90x = 8,128.35 × 4,706.10
  4. Step 4: Simplify right side
    5,418.90x = 38,252,827.94
  5. Step 5: Solve for x
    x = 38,252,827.94/5,418.90
  6. Step 6: Final answer
    x = 7,059.15

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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.