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Finding the Fourth Proportional to 2,292.40, 3,436.54 and 830.53

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Solution

The fourth proportional to 2,292.40, 3,436.54 and 830.53 is: 1,245.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,292.40 : 3,436.54 = 830.53 : x
  2. Step 2: Convert to fraction form
    2,292.40/3,436.54 = 830.53/x
  3. Step 3: Cross multiply
    2,292.40x = 3,436.54 × 830.53
  4. Step 4: Simplify right side
    2,292.40x = 2,854,156.46
  5. Step 5: Solve for x
    x = 2,854,156.46/2,292.40
  6. Step 6: Final answer
    x = 1,245.05

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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.