Home / 1,425.06-2,127.33-1,320.84

Finding the Fourth Proportional to 1,425.06, 2,127.33 and 1,320.84

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Solution

The fourth proportional to 1,425.06, 2,127.33 and 1,320.84 is: 1,971.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,425.06 : 2,127.33 = 1,320.84 : x
  2. Step 2: Convert to fraction form
    1,425.06/2,127.33 = 1,320.84/x
  3. Step 3: Cross multiply
    1,425.06x = 2,127.33 × 1,320.84
  4. Step 4: Simplify right side
    1,425.06x = 2,809,862.56
  5. Step 5: Solve for x
    x = 2,809,862.56/1,425.06
  6. Step 6: Final answer
    x = 1,971.75

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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.