Home / 2,165.72-3,248.58-867.20

Finding the Fourth Proportional to 2,165.72, 3,248.58 and 867.20

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Solution

The fourth proportional to 2,165.72, 3,248.58 and 867.20 is: 1,300.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,165.72 : 3,248.58 = 867.20 : x
  2. Step 2: Convert to fraction form
    2,165.72/3,248.58 = 867.20/x
  3. Step 3: Cross multiply
    2,165.72x = 3,248.58 × 867.20
  4. Step 4: Simplify right side
    2,165.72x = 2,817,152.33
  5. Step 5: Solve for x
    x = 2,817,152.33/2,165.72
  6. Step 6: Final answer
    x = 1,300.80

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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.