Home / 3,237.60-4,856.40-1,388.10

Finding the Fourth Proportional to 3,237.60, 4,856.40 and 1,388.10

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Solution

The fourth proportional to 3,237.60, 4,856.40 and 1,388.10 is: 2,082.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,237.60 : 4,856.40 = 1,388.10 : x
  2. Step 2: Convert to fraction form
    3,237.60/4,856.40 = 1,388.10/x
  3. Step 3: Cross multiply
    3,237.60x = 4,856.40 × 1,388.10
  4. Step 4: Simplify right side
    3,237.60x = 6,741,168.84
  5. Step 5: Solve for x
    x = 6,741,168.84/3,237.60
  6. Step 6: Final answer
    x = 2,082.15

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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.