Home / 5,289.47-7,299.50-2,931.61

Finding the Fourth Proportional to 5,289.47, 7,299.50 and 2,931.61

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Solution

The fourth proportional to 5,289.47, 7,299.50 and 2,931.61 is: 4,045.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,289.47 : 7,299.50 = 2,931.61 : x
  2. Step 2: Convert to fraction form
    5,289.47/7,299.50 = 2,931.61/x
  3. Step 3: Cross multiply
    5,289.47x = 7,299.50 × 2,931.61
  4. Step 4: Simplify right side
    5,289.47x = 21,399,296.83
  5. Step 5: Solve for x
    x = 21,399,296.83/5,289.47
  6. Step 6: Final answer
    x = 4,045.64

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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.