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Finding the Fourth Proportional to 5,332.78, 7,998.06 and 1,820.87

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Solution

The fourth proportional to 5,332.78, 7,998.06 and 1,820.87 is: 2,730.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,332.78 : 7,998.06 = 1,820.87 : x
  2. Step 2: Convert to fraction form
    5,332.78/7,998.06 = 1,820.87/x
  3. Step 3: Cross multiply
    5,332.78x = 7,998.06 × 1,820.87
  4. Step 4: Simplify right side
    5,332.78x = 14,563,427.51
  5. Step 5: Solve for x
    x = 14,563,427.51/5,332.78
  6. Step 6: Final answer
    x = 2,730.93

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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.