Home / 1,563.38-2,156.45-1,039.42

Finding the Fourth Proportional to 1,563.38, 2,156.45 and 1,039.42

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Solution

The fourth proportional to 1,563.38, 2,156.45 and 1,039.42 is: 1,433.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,563.38 : 2,156.45 = 1,039.42 : x
  2. Step 2: Convert to fraction form
    1,563.38/2,156.45 = 1,039.42/x
  3. Step 3: Cross multiply
    1,563.38x = 2,156.45 × 1,039.42
  4. Step 4: Simplify right side
    1,563.38x = 2,241,457.26
  5. Step 5: Solve for x
    x = 2,241,457.26/1,563.38
  6. Step 6: Final answer
    x = 1,433.73

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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.