Home / 2,586.06-3,879.36-1,490.40

Finding the Fourth Proportional to 2,586.06, 3,879.36 and 1,490.40

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Solution

The fourth proportional to 2,586.06, 3,879.36 and 1,490.40 is: 2,235.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,586.06 : 3,879.36 = 1,490.40 : x
  2. Step 2: Convert to fraction form
    2,586.06/3,879.36 = 1,490.40/x
  3. Step 3: Cross multiply
    2,586.06x = 3,879.36 × 1,490.40
  4. Step 4: Simplify right side
    2,586.06x = 5,781,798.14
  5. Step 5: Solve for x
    x = 5,781,798.14/2,586.06
  6. Step 6: Final answer
    x = 2,235.76

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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.