Home / 1,456.80-2,005.74-1,357.44

Finding the Fourth Proportional to 1,456.80, 2,005.74 and 1,357.44

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Solution

The fourth proportional to 1,456.80, 2,005.74 and 1,357.44 is: 1,868.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,456.80 : 2,005.74 = 1,357.44 : x
  2. Step 2: Convert to fraction form
    1,456.80/2,005.74 = 1,357.44/x
  3. Step 3: Cross multiply
    1,456.80x = 2,005.74 × 1,357.44
  4. Step 4: Simplify right side
    1,456.80x = 2,722,671.71
  5. Step 5: Solve for x
    x = 2,722,671.71/1,456.80
  6. Step 6: Final answer
    x = 1,868.94

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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.