Home / 1,754.12-2,421.78-1,222.84

Finding the Fourth Proportional to 1,754.12, 2,421.78 and 1,222.84

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Solution

The fourth proportional to 1,754.12, 2,421.78 and 1,222.84 is: 1,688.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,754.12 : 2,421.78 = 1,222.84 : x
  2. Step 2: Convert to fraction form
    1,754.12/2,421.78 = 1,222.84/x
  3. Step 3: Cross multiply
    1,754.12x = 2,421.78 × 1,222.84
  4. Step 4: Simplify right side
    1,754.12x = 2,961,449.46
  5. Step 5: Solve for x
    x = 2,961,449.46/1,754.12
  6. Step 6: Final answer
    x = 1,688.28

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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.