Home / 1,669.28-2,303.58-1,039.49

Finding the Fourth Proportional to 1,669.28, 2,303.58 and 1,039.49

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Solution

The fourth proportional to 1,669.28, 2,303.58 and 1,039.49 is: 1,434.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,669.28 : 2,303.58 = 1,039.49 : x
  2. Step 2: Convert to fraction form
    1,669.28/2,303.58 = 1,039.49/x
  3. Step 3: Cross multiply
    1,669.28x = 2,303.58 × 1,039.49
  4. Step 4: Simplify right side
    1,669.28x = 2,394,548.94
  5. Step 5: Solve for x
    x = 2,394,548.94/1,669.28
  6. Step 6: Final answer
    x = 1,434.48

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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.