Home / 1,572.43-2,169.96-983.30

Finding the Fourth Proportional to 1,572.43, 2,169.96 and 983.30

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Solution

The fourth proportional to 1,572.43, 2,169.96 and 983.30 is: 1,356.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,572.43 : 2,169.96 = 983.30 : x
  2. Step 2: Convert to fraction form
    1,572.43/2,169.96 = 983.30/x
  3. Step 3: Cross multiply
    1,572.43x = 2,169.96 × 983.30
  4. Step 4: Simplify right side
    1,572.43x = 2,133,715.27
  5. Step 5: Solve for x
    x = 2,133,715.27/1,572.43
  6. Step 6: Final answer
    x = 1,356.96

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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.