Home / 3,687.90-5,085.40-2,848.74

Finding the Fourth Proportional to 3,687.90, 5,085.40 and 2,848.74

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Solution

The fourth proportional to 3,687.90, 5,085.40 and 2,848.74 is: 3,928.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,687.90 : 5,085.40 = 2,848.74 : x
  2. Step 2: Convert to fraction form
    3,687.90/5,085.40 = 2,848.74/x
  3. Step 3: Cross multiply
    3,687.90x = 5,085.40 × 2,848.74
  4. Step 4: Simplify right side
    3,687.90x = 14,486,982.40
  5. Step 5: Solve for x
    x = 14,486,982.40/3,687.90
  6. Step 6: Final answer
    x = 3,928.25

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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.