Home / 3,070.80-4,237.20-2,915.16

Finding the Fourth Proportional to 3,070.80, 4,237.20 and 2,915.16

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Solution

The fourth proportional to 3,070.80, 4,237.20 and 2,915.16 is: 4,022.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,070.80 : 4,237.20 = 2,915.16 : x
  2. Step 2: Convert to fraction form
    3,070.80/4,237.20 = 2,915.16/x
  3. Step 3: Cross multiply
    3,070.80x = 4,237.20 × 2,915.16
  4. Step 4: Simplify right side
    3,070.80x = 12,352,115.95
  5. Step 5: Solve for x
    x = 12,352,115.95/3,070.80
  6. Step 6: Final answer
    x = 4,022.44

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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.