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Finding the Fourth Proportional to 5,289.76, 7,299.81 and 2,931.89

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Solution

The fourth proportional to 5,289.76, 7,299.81 and 2,931.89 is: 4,045.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,289.76 : 7,299.81 = 2,931.89 : x
  2. Step 2: Convert to fraction form
    5,289.76/7,299.81 = 2,931.89/x
  3. Step 3: Cross multiply
    5,289.76x = 7,299.81 × 2,931.89
  4. Step 4: Simplify right side
    5,289.76x = 21,402,203.44
  5. Step 5: Solve for x
    x = 21,402,203.44/5,289.76
  6. Step 6: Final answer
    x = 4,045.97

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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.