Home / 5,243.28-7,866.12-1,780.56

Finding the Fourth Proportional to 5,243.28, 7,866.12 and 1,780.56

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Solution

The fourth proportional to 5,243.28, 7,866.12 and 1,780.56 is: 2,671.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,243.28 : 7,866.12 = 1,780.56 : x
  2. Step 2: Convert to fraction form
    5,243.28/7,866.12 = 1,780.56/x
  3. Step 3: Cross multiply
    5,243.28x = 7,866.12 × 1,780.56
  4. Step 4: Simplify right side
    5,243.28x = 14,006,098.63
  5. Step 5: Solve for x
    x = 14,006,098.63/5,243.28
  6. Step 6: Final answer
    x = 2,671.25

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1.5x scale

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.