Home / 1,296.21-1,932.90-1,284.51

Finding the Fourth Proportional to 1,296.21, 1,932.90 and 1,284.51

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Solution

The fourth proportional to 1,296.21, 1,932.90 and 1,284.51 is: 1,915.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,296.21 : 1,932.90 = 1,284.51 : x
  2. Step 2: Convert to fraction form
    1,296.21/1,932.90 = 1,284.51/x
  3. Step 3: Cross multiply
    1,296.21x = 1,932.90 × 1,284.51
  4. Step 4: Simplify right side
    1,296.21x = 2,482,829.38
  5. Step 5: Solve for x
    x = 2,482,829.38/1,296.21
  6. Step 6: Final answer
    x = 1,915.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.