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Finding the Fourth Proportional to 7,236.55, 9,985.30 and 4,254.94

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Solution

The fourth proportional to 7,236.55, 9,985.30 and 4,254.94 is: 5,871.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,236.55 : 9,985.30 = 4,254.94 : x
  2. Step 2: Convert to fraction form
    7,236.55/9,985.30 = 4,254.94/x
  3. Step 3: Cross multiply
    7,236.55x = 9,985.30 × 4,254.94
  4. Step 4: Simplify right side
    7,236.55x = 42,486,852.38
  5. Step 5: Solve for x
    x = 42,486,852.38/7,236.55
  6. Step 6: Final answer
    x = 5,871.15

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.