Home / 1,425.31-1,965.38-1,237.19

Finding the Fourth Proportional to 1,425.31, 1,965.38 and 1,237.19

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Solution

The fourth proportional to 1,425.31, 1,965.38 and 1,237.19 is: 1,705.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,425.31 : 1,965.38 = 1,237.19 : x
  2. Step 2: Convert to fraction form
    1,425.31/1,965.38 = 1,237.19/x
  3. Step 3: Cross multiply
    1,425.31x = 1,965.38 × 1,237.19
  4. Step 4: Simplify right side
    1,425.31x = 2,431,541.75
  5. Step 5: Solve for x
    x = 2,431,541.75/1,425.31
  6. Step 6: Final answer
    x = 1,705.98

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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.