Home / 1,349.92-2,021.98-1,127.94

Finding the Fourth Proportional to 1,349.92, 2,021.98 and 1,127.94

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Solution

The fourth proportional to 1,349.92, 2,021.98 and 1,127.94 is: 1,689.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,349.92 : 2,021.98 = 1,127.94 : x
  2. Step 2: Convert to fraction form
    1,349.92/2,021.98 = 1,127.94/x
  3. Step 3: Cross multiply
    1,349.92x = 2,021.98 × 1,127.94
  4. Step 4: Simplify right side
    1,349.92x = 2,280,672.12
  5. Step 5: Solve for x
    x = 2,280,672.12/1,349.92
  6. Step 6: Final answer
    x = 1,689.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.