Home / 1,542.74-2,126.72-1,228.12

Finding the Fourth Proportional to 1,542.74, 2,126.72 and 1,228.12

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Solution

The fourth proportional to 1,542.74, 2,126.72 and 1,228.12 is: 1,693.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,542.74 : 2,126.72 = 1,228.12 : x
  2. Step 2: Convert to fraction form
    1,542.74/2,126.72 = 1,228.12/x
  3. Step 3: Cross multiply
    1,542.74x = 2,126.72 × 1,228.12
  4. Step 4: Simplify right side
    1,542.74x = 2,611,867.37
  5. Step 5: Solve for x
    x = 2,611,867.37/1,542.74
  6. Step 6: Final answer
    x = 1,693.01

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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.