Home / 5,248.63-7,243.31-2,890.72

Finding the Fourth Proportional to 5,248.63, 7,243.31 and 2,890.72

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Solution

The fourth proportional to 5,248.63, 7,243.31 and 2,890.72 is: 3,989.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,248.63 : 7,243.31 = 2,890.72 : x
  2. Step 2: Convert to fraction form
    5,248.63/7,243.31 = 2,890.72/x
  3. Step 3: Cross multiply
    5,248.63x = 7,243.31 × 2,890.72
  4. Step 4: Simplify right side
    5,248.63x = 20,938,330.41
  5. Step 5: Solve for x
    x = 20,938,330.41/5,248.63
  6. Step 6: Final answer
    x = 3,989.30

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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.