Home / 2,855.07-3,937.15-2,148.60

Finding the Fourth Proportional to 2,855.07, 3,937.15 and 2,148.60

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Solution

The fourth proportional to 2,855.07, 3,937.15 and 2,148.60 is: 2,962.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,855.07 : 3,937.15 = 2,148.60 : x
  2. Step 2: Convert to fraction form
    2,855.07/3,937.15 = 2,148.60/x
  3. Step 3: Cross multiply
    2,855.07x = 3,937.15 × 2,148.60
  4. Step 4: Simplify right side
    2,855.07x = 8,459,363.59
  5. Step 5: Solve for x
    x = 8,459,363.59/2,855.07
  6. Step 6: Final answer
    x = 2,962.93

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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.