Home / 2,871.95-3,962.99-1,927.55

Finding the Fourth Proportional to 2,871.95, 3,962.99 and 1,927.55

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Solution

The fourth proportional to 2,871.95, 3,962.99 and 1,927.55 is: 2,659.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,871.95 : 3,962.99 = 1,927.55 : x
  2. Step 2: Convert to fraction form
    2,871.95/3,962.99 = 1,927.55/x
  3. Step 3: Cross multiply
    2,871.95x = 3,962.99 × 1,927.55
  4. Step 4: Simplify right side
    2,871.95x = 7,638,861.37
  5. Step 5: Solve for x
    x = 7,638,861.37/2,871.95
  6. Step 6: Final answer
    x = 2,659.82

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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.