Home / 1,640.98-2,267.52-1,247.32

Finding the Fourth Proportional to 1,640.98, 2,267.52 and 1,247.32

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Solution

The fourth proportional to 1,640.98, 2,267.52 and 1,247.32 is: 1,723.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,640.98 : 2,267.52 = 1,247.32 : x
  2. Step 2: Convert to fraction form
    1,640.98/2,267.52 = 1,247.32/x
  3. Step 3: Cross multiply
    1,640.98x = 2,267.52 × 1,247.32
  4. Step 4: Simplify right side
    1,640.98x = 2,828,323.05
  5. Step 5: Solve for x
    x = 2,828,323.05/1,640.98
  6. Step 6: Final answer
    x = 1,723.56

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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.