Home / 1,977.23-2,728.32-1,137.74

Finding the Fourth Proportional to 1,977.23, 2,728.32 and 1,137.74

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Solution

The fourth proportional to 1,977.23, 2,728.32 and 1,137.74 is: 1,569.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,977.23 : 2,728.32 = 1,137.74 : x
  2. Step 2: Convert to fraction form
    1,977.23/2,728.32 = 1,137.74/x
  3. Step 3: Cross multiply
    1,977.23x = 2,728.32 × 1,137.74
  4. Step 4: Simplify right side
    1,977.23x = 3,104,105.16
  5. Step 5: Solve for x
    x = 3,104,105.16/1,977.23
  6. Step 6: Final answer
    x = 1,569.93

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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.