Home / 5,248.78-7,243.37-2,890.93

Finding the Fourth Proportional to 5,248.78, 7,243.37 and 2,890.93

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Solution

The fourth proportional to 5,248.78, 7,243.37 and 2,890.93 is: 3,989.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,248.78 : 7,243.37 = 2,890.93 : x
  2. Step 2: Convert to fraction form
    5,248.78/7,243.37 = 2,890.93/x
  3. Step 3: Cross multiply
    5,248.78x = 7,243.37 × 2,890.93
  4. Step 4: Simplify right side
    5,248.78x = 20,940,075.63
  5. Step 5: Solve for x
    x = 20,940,075.63/5,248.78
  6. Step 6: Final answer
    x = 3,989.51

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1.5x scale

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.