Home / 5,278.77-7,918.65-2,159.01

Finding the Fourth Proportional to 5,278.77, 7,918.65 and 2,159.01

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Solution

The fourth proportional to 5,278.77, 7,918.65 and 2,159.01 is: 3,238.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,278.77 : 7,918.65 = 2,159.01 : x
  2. Step 2: Convert to fraction form
    5,278.77/7,918.65 = 2,159.01/x
  3. Step 3: Cross multiply
    5,278.77x = 7,918.65 × 2,159.01
  4. Step 4: Simplify right side
    5,278.77x = 17,096,444.54
  5. Step 5: Solve for x
    x = 17,096,444.54/5,278.77
  6. Step 6: Final answer
    x = 3,238.72

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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.