Home / 2,155.04-3,232.60-856.40

Finding the Fourth Proportional to 2,155.04, 3,232.60 and 856.40

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Solution

The fourth proportional to 2,155.04, 3,232.60 and 856.40 is: 1,284.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,155.04 : 3,232.60 = 856.40 : x
  2. Step 2: Convert to fraction form
    2,155.04/3,232.60 = 856.40/x
  3. Step 3: Cross multiply
    2,155.04x = 3,232.60 × 856.40
  4. Step 4: Simplify right side
    2,155.04x = 2,768,398.64
  5. Step 5: Solve for x
    x = 2,768,398.64/2,155.04
  6. Step 6: Final answer
    x = 1,284.62

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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.