Home / 2,356.38-3,251.80-1,308.45

Finding the Fourth Proportional to 2,356.38, 3,251.80 and 1,308.45

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Solution

The fourth proportional to 2,356.38, 3,251.80 and 1,308.45 is: 1,805.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,356.38 : 3,251.80 = 1,308.45 : x
  2. Step 2: Convert to fraction form
    2,356.38/3,251.80 = 1,308.45/x
  3. Step 3: Cross multiply
    2,356.38x = 3,251.80 × 1,308.45
  4. Step 4: Simplify right side
    2,356.38x = 4,254,817.71
  5. Step 5: Solve for x
    x = 4,254,817.71/2,356.38
  6. Step 6: Final answer
    x = 1,805.66

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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.