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Finding the Fourth Proportional to 2,168.98, 3,253.47 and 870.46

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Solution

The fourth proportional to 2,168.98, 3,253.47 and 870.46 is: 1,305.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,168.98 : 3,253.47 = 870.46 : x
  2. Step 2: Convert to fraction form
    2,168.98/3,253.47 = 870.46/x
  3. Step 3: Cross multiply
    2,168.98x = 3,253.47 × 870.46
  4. Step 4: Simplify right side
    2,168.98x = 2,832,015.50
  5. Step 5: Solve for x
    x = 2,832,015.50/2,168.98
  6. Step 6: Final answer
    x = 1,305.69

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Double scale
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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.