Home / 1,308.23-1,962.41-486.31

Finding the Fourth Proportional to 1,308.23, 1,962.41 and 486.31

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Solution

The fourth proportional to 1,308.23, 1,962.41 and 486.31 is: 729.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,308.23 : 1,962.41 = 486.31 : x
  2. Step 2: Convert to fraction form
    1,308.23/1,962.41 = 486.31/x
  3. Step 3: Cross multiply
    1,308.23x = 1,962.41 × 486.31
  4. Step 4: Simplify right side
    1,308.23x = 954,334.40
  5. Step 5: Solve for x
    x = 954,334.40/1,308.23
  6. Step 6: Final answer
    x = 729.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.