Home / 1,137.24-1,693.98-1,122.12

Finding the Fourth Proportional to 1,137.24, 1,693.98 and 1,122.12

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Solution

The fourth proportional to 1,137.24, 1,693.98 and 1,122.12 is: 1,671.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,137.24 : 1,693.98 = 1,122.12 : x
  2. Step 2: Convert to fraction form
    1,137.24/1,693.98 = 1,122.12/x
  3. Step 3: Cross multiply
    1,137.24x = 1,693.98 × 1,122.12
  4. Step 4: Simplify right side
    1,137.24x = 1,900,848.84
  5. Step 5: Solve for x
    x = 1,900,848.84/1,137.24
  6. Step 6: Final answer
    x = 1,671.46

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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.