Home / 1,329.10-1,983.83-1,247.02

Finding the Fourth Proportional to 1,329.10, 1,983.83 and 1,247.02

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Solution

The fourth proportional to 1,329.10, 1,983.83 and 1,247.02 is: 1,861.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,329.10 : 1,983.83 = 1,247.02 : x
  2. Step 2: Convert to fraction form
    1,329.10/1,983.83 = 1,247.02/x
  3. Step 3: Cross multiply
    1,329.10x = 1,983.83 × 1,247.02
  4. Step 4: Simplify right side
    1,329.10x = 2,473,875.69
  5. Step 5: Solve for x
    x = 2,473,875.69/1,329.10
  6. Step 6: Final answer
    x = 1,861.32

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.