Home / 1,308.79-1,962.98-1,236.50

Finding the Fourth Proportional to 1,308.79, 1,962.98 and 1,236.50

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Solution

The fourth proportional to 1,308.79, 1,962.98 and 1,236.50 is: 1,854.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,308.79 : 1,962.98 = 1,236.50 : x
  2. Step 2: Convert to fraction form
    1,308.79/1,962.98 = 1,236.50/x
  3. Step 3: Cross multiply
    1,308.79x = 1,962.98 × 1,236.50
  4. Step 4: Simplify right side
    1,308.79x = 2,427,208.77
  5. Step 5: Solve for x
    x = 2,427,208.77/1,308.79
  6. Step 6: Final answer
    x = 1,854.55

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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.