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Finding the Fourth Proportional to 3,083, 4,624.40 and 891.74

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Solution

The fourth proportional to 3,083, 4,624.40 and 891.74 is: 1,337.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,083 : 4,624.40 = 891.74 : x
  2. Step 2: Convert to fraction form
    3,083/4,624.40 = 891.74/x
  3. Step 3: Cross multiply
    3,083x = 4,624.40 × 891.74
  4. Step 4: Simplify right side
    3,083x = 4,123,762.46
  5. Step 5: Solve for x
    x = 4,123,762.46/3,083
  6. Step 6: Final answer
    x = 1,337.58

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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.